diff --git a/src/main/java/com/commafeed/backend/DatabaseCleaner.java b/src/main/java/com/commafeed/backend/DatabaseCleaner.java
index 39179c3b..fc5c036d 100644
--- a/src/main/java/com/commafeed/backend/DatabaseCleaner.java
+++ b/src/main/java/com/commafeed/backend/DatabaseCleaner.java
@@ -10,13 +10,11 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import com.commafeed.backend.dao.FeedDAO;
-import com.commafeed.backend.dao.FeedDAO.FeedCount;
 import com.commafeed.backend.dao.FeedEntryDAO;
 import com.commafeed.backend.dao.FeedSubscriptionDAO;
 import com.commafeed.backend.model.Feed;
 import com.commafeed.backend.model.FeedSubscription;
 import com.commafeed.backend.services.ApplicationSettingsService;
-import com.google.common.collect.Lists;
 
 public class DatabaseCleaner {
 
@@ -75,44 +73,6 @@ public class DatabaseCleaner {
 		return total;
 	}
 
-	public long cleanDuplicateFeeds() {
-		long total = 0;
-		int deleted = -1;
-		do {
-			List<FeedCount> fcs = feedDAO
-					.findDuplicates(0, applicationSettingsService.get()
-							.getDatabaseUpdateThreads(), 1);
-			deleted = fcs.size();
-
-			List<Thread> threads = Lists.newArrayList();
-			for (final FeedCount fc : fcs) {
-				Thread thread = new Thread() {
-					public void run() {
-						Feed into = feedDAO.findById(fc.feeds.get(0).getId());
-						List<Feed> feeds = Lists.newArrayList();
-						for (Feed feed : fc.feeds) {
-							feeds.add(feedDAO.findById(feed.getId()));
-						}
-						mergeFeeds(into, feeds);
-					};
-				};
-				thread.start();
-				threads.add(thread);
-			}
-			for (Thread thread : threads) {
-				try {
-					thread.join();
-				} catch (InterruptedException e) {
-					log.error(e.getMessage(), e);
-				}
-			}
-			total += deleted;
-			log.info("merged {} feeds", total);
-		} while (deleted != 0);
-		log.info("cleanup done: {} feeds merged", total);
-		return total;
-	}
-
 	public void mergeFeeds(Feed into, List<Feed> feeds) {
 		for (Feed feed : feeds) {
 			if (into.getId().equals(feed.getId())) {
diff --git a/src/main/java/com/commafeed/backend/dao/FeedDAO.java b/src/main/java/com/commafeed/backend/dao/FeedDAO.java
index 203e8004..3813ebec 100644
--- a/src/main/java/com/commafeed/backend/dao/FeedDAO.java
+++ b/src/main/java/com/commafeed/backend/dao/FeedDAO.java
@@ -13,6 +13,7 @@ import javax.persistence.criteria.Path;
 import javax.persistence.criteria.Predicate;
 import javax.persistence.criteria.Root;
 import javax.persistence.criteria.SetJoin;
+import javax.persistence.metamodel.SingularAttribute;
 import javax.xml.bind.annotation.XmlAccessType;
 import javax.xml.bind.annotation.XmlAccessorType;
 import javax.xml.bind.annotation.XmlRootElement;
@@ -34,7 +35,7 @@ public class FeedDAO extends GenericDAO<Feed> {
 	@XmlRootElement
 	@XmlAccessorType(XmlAccessType.FIELD)
 	public static class FeedCount {
-		public String normalizedUrlHash;
+		public String value;
 		public List<Feed> feeds;
 	}
 
@@ -136,28 +137,43 @@ public class FeedDAO extends GenericDAO<Feed> {
 
 	}
 
-	public List<FeedCount> findDuplicates(int offset, int limit, long minCount) {
+	public static enum DuplicateMode {
+		NORMALIZED_URL(Feed_.normalizedUrlHash), LAST_CONTENT(
+				Feed_.lastContentHash), PUSH_TOPIC(Feed_.pushTopicHash);
+		private SingularAttribute<Feed, String> path;
+
+		private DuplicateMode(SingularAttribute<Feed, String> path) {
+			this.path = path;
+		}
+
+		public SingularAttribute<Feed, String> getPath() {
+			return path;
+		}
+	}
+
+	public List<FeedCount> findDuplicates(DuplicateMode mode, int offset,
+			int limit, long minCount) {
 		CriteriaQuery<String> query = builder.createQuery(String.class);
 		Root<Feed> root = query.from(getType());
 
-		Path<String> hashPath = root.get(Feed_.normalizedUrlHash);
-		Expression<Long> count = builder.count(hashPath);
+		Path<String> path = root.get(mode.getPath());
+		Expression<Long> count = builder.count(path);
 
-		query.select(hashPath);
+		query.select(path);
 
-		query.groupBy(hashPath);
+		query.groupBy(path);
 		query.having(builder.greaterThan(count, minCount));
 
 		TypedQuery<String> q = em.createQuery(query);
 		limit(q, offset, limit);
-		List<String> normalizedUrlHashes = q.getResultList();
+		List<String> pathValues = q.getResultList();
 
 		List<FeedCount> result = Lists.newArrayList();
-		for (String hash : normalizedUrlHashes) {
+		for (String pathValue : pathValues) {
 			FeedCount fc = new FeedCount();
-			fc.normalizedUrlHash = hash;
+			fc.value = pathValue;
 			fc.feeds = Lists.newArrayList();
-			for (Feed feed : findByField(Feed_.normalizedUrlHash, hash)) {
+			for (Feed feed : findByField(mode.getPath(), pathValue)) {
 				Feed f = new Feed();
 				f.setId(feed.getId());
 				f.setUrl(feed.getUrl());
diff --git a/src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java b/src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java
index 793ec0b7..9d8a9f54 100644
--- a/src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java
+++ b/src/main/java/com/commafeed/frontend/rest/resources/AdminREST.java
@@ -21,6 +21,7 @@ import com.commafeed.backend.DatabaseCleaner;
 import com.commafeed.backend.MetricsBean;
 import com.commafeed.backend.StartupBean;
 import com.commafeed.backend.dao.FeedDAO;
+import com.commafeed.backend.dao.FeedDAO.DuplicateMode;
 import com.commafeed.backend.dao.FeedDAO.FeedCount;
 import com.commafeed.backend.dao.UserDAO;
 import com.commafeed.backend.dao.UserRoleDAO;
@@ -272,9 +273,11 @@ public class AdminREST extends AbstractResourceREST {
 	@Path("/cleanup/findDuplicateFeeds")
 	@GET
 	@ApiOperation(value = "Find duplicate feeds")
-	public Response findDuplicateFeeds(@QueryParam("page") int page,
-			@QueryParam("limit") int limit, @QueryParam("minCount") long minCount) {
-		List<FeedCount> list = feedDAO.findDuplicates(limit * page, limit, minCount);
+	public Response findDuplicateFeeds(@QueryParam("mode") DuplicateMode mode,
+			@QueryParam("page") int page, @QueryParam("limit") int limit,
+			@QueryParam("minCount") long minCount) {
+		List<FeedCount> list = feedDAO.findDuplicates(mode, limit * page,
+				limit, minCount);
 		return Response.ok(list).build();
 	}
 
@@ -303,15 +306,4 @@ public class AdminREST extends AbstractResourceREST {
 		cleaner.mergeFeeds(into, feeds);
 		return Response.ok().build();
 	}
-
-	@Path("/cleanup/automerge")
-	@GET
-	@ApiOperation(value = "Automatically merge feeds", notes = "Merge feeds together")
-	public Response autoMergeFeeds() {
-		Map<String, Long> map = Maps.newHashMap();
-		map.put("merged feeds",
-				cleaner.cleanDuplicateFeeds());
-		return Response.ok(map).build();
-	}
-
 }
diff --git a/src/main/webapp/js/controllers.js b/src/main/webapp/js/controllers.js
index 36fe35d0..bd8bc9a9 100644
--- a/src/main/webapp/js/controllers.js
+++ b/src/main/webapp/js/controllers.js
@@ -1213,9 +1213,11 @@ module.controller('ManageDuplicateFeedsCtrl', [
 	$scope.limit = 10;
 	$scope.page = 0;
 	$scope.minCount = 1;
+	$scope.mode = 'NORMALIZED_URL';
 	$scope.mergeData = {};
 	$scope.refreshData = function() {
 		AdminCleanupService.findDuplicateFeeds({
+			mode: $scope.mode,
 			limit : $scope.limit,
 			page : $scope.page, 
 			minCount: $scope.minCount
@@ -1342,6 +1344,9 @@ function($scope, $location, $state,	AdminSettingsService) {
 	$scope.toUsers = function() {
 		$state.transitionTo('admin.userlist');
 	};
+	$scope.toCleanup = function() {
+		$state.transitionTo('admin.duplicate_feeds');
+	};
 }]);
 
 module.controller('HelpController', [ '$scope', 'CategoryService',
diff --git a/src/main/webapp/js/main.js b/src/main/webapp/js/main.js
index 2f63fbf4..7d6a1b64 100644
--- a/src/main/webapp/js/main.js
+++ b/src/main/webapp/js/main.js
@@ -92,7 +92,7 @@ app.config([ '$routeProvider', '$stateProvider', '$urlRouterProvider', '$httpPro
 				controller : 'ManageUserCtrl'
 			});
 			$stateProvider.state('admin.duplicate_feeds', {
-				url : '/feeds/duplicates/',
+				url : '/feeds/duplicates',
 				templateUrl : 'templates/admin.duplicate_feeds.html',
 				controller : 'ManageDuplicateFeedsCtrl'
 			});
diff --git a/src/main/webapp/templates/admin.duplicate_feeds.html b/src/main/webapp/templates/admin.duplicate_feeds.html
index 72555ab3..c42ddae9 100644
--- a/src/main/webapp/templates/admin.duplicate_feeds.html
+++ b/src/main/webapp/templates/admin.duplicate_feeds.html
@@ -1,10 +1,21 @@
 <div class="row">
 	
+	<div>
 	Limit <input type="number" ng-model="limit" />
 	Page <input type="number" ng-model="page" />
 	Min. count <input type="number" ng-model="minCount" />
-	<input type="button" class="btn" ng-click="refreshData()" value="Refresh" />
-	<input type="button" class="btn" ng-click="autoMerge()" value="Auto merge selected" />
+	</div>
+	<div>
+		Mode
+		<select ng-model="mode">
+			<option value="NORMALIZED_URL">Normalized URLs</option>
+			<option value="LAST_CONTENT">Last content</option>
+			<option value="PUSH_TOPIC">Pubsubhubbub topic URL</option>
+		</select>
+		<input type="button" class="btn" ng-click="refreshData()" value="Refresh" />
+		<input type="button" class="btn" ng-click="autoMerge()" value="Auto merge selected" />
+	</div>
+
 	<table class="table table-condensed table-hover" ui-if="counts">
 		<thead>
 			<tr>
diff --git a/src/main/webapp/templates/admin.settings.html b/src/main/webapp/templates/admin.settings.html
index 95484428..53f69ff9 100644
--- a/src/main/webapp/templates/admin.settings.html
+++ b/src/main/webapp/templates/admin.settings.html
@@ -5,6 +5,10 @@
 			<small>
 				<a ng-click="toUsers()" class="pointer">Manage users</a>
 			</small>
+			- 
+			<small>
+				<a ng-click="toCleanup()" class="pointer">Cleanup feeds</a>
+			</small>
 		</h1>
 	</div>