[@Mahz], When you implement the notifications for the Mention system, I have noticed one thing which could [i]possibly[/i] cause unwanted behaviour. You will need to make sure that @Mentions in Convos don't send notifications. It would be inconvenient to receive a notification for a thread which you can not access (since aside from notifying people, @Mentions are also good for linking to people). Just something to watch out for when developing. I'm not sure if you had thought of that already, but I thought I'd bring it up.