1 files changed, 3 insertions, 1 deletions
diff --git a/src/com/p4square/grow/model/MessageThread.java b/src/com/p4square/grow/model/MessageThread.java
index 25a46b7..9542a18 100644
--- a/src/com/p4square/grow/model/MessageThread.java
+++ b/src/com/p4square/grow/model/MessageThread.java
@@ -21,7 +21,9 @@ public class MessageThread {
      */
     public static MessageThread createNew() {
         MessageThread t = new MessageThread();
-        t.setId(String.format("%x-%s", System.currentTimeMillis(), UUID.randomUUID().toString()));
+        // IDs are keyed to sort lexicographically from latest to oldest.
+        t.setId(String.format("%016x-%s", Long.MAX_VALUE - System.currentTimeMillis(),
+                    UUID.randomUUID().toString()));
 
         return t;
     }