Just a suggestion, i think it'd be cool to have a favorites tab in my profile. That way if i read a thread and find it informative i can hit a add to favorites button and it'll be saved in my profile. I can't use the browser favorites button cause i use more than one computer. The only way to kinda do this that ive found is to just post a comment in the thread i like then search my post history. Just an idea.

 

That is what the Subscription feature is for. You can subscribe to threads with or without receiving email notifications. All threads are then shown to you in the UserCP.