How to tag people in posts inside CB activity?

My users use the tag system (on facebook) a lot to make each other aware of posts. I know that the tag system in CB is kinda working (never got it to work yet but havent tried too much) when you click on that you are somewhere with someone but as far as I know it does not work on comments (ie @Krileon)

Or am I doing something wrong?

@Username usages are just Mentions. It doesn't tag them. A tag can be added when making a new status post to state you're with that person for example. There is no notifications for tags yet and there is no notification for mentions (unlikely to be added, but maybe possible in 4.0.0). Eventually activity that a user is mentioned in will show on their stream, but haven't figured out how to do that in a way that won't absolutely destroy the queries performance.

OK got it (also managed to solve the request "problem" that I had by lazy loading and improving our compression plugins for mobiles AND placing JCH at the top of the plugins). Does the Mention get put into the db? We could then simply use an auto action trigger and send out push notifications using the code function of auto action as well as the conditions.

Mentions are not added to the database, but tags in status posts are. You could act on the create activity trigger I guess and parse it for mentions in your own custom code I suppose. CB Activity 4.0.0 will be improving several of the triggers though and will see if I can add a function to activity object to parse out the mentioned users.