+ return loadIds("KnownPosts");
+ }
+
+ public synchronized Set<String> loadKnownPostReplies() {
+ return loadIds("KnownReplies");
+ }
+
+ public synchronized Set<String> loadBookmarkedPosts() {
+ return loadIds("Bookmarks/Post");
+ }
+
+ private Set<String> loadIds(String prefix) {
+ Set<String> ids = new HashSet<String>();
+ int idCounter = 0;