Give us a way to follow or "favorite" entire threads!

Hey Riot! Unless I'm missing something, there doesn't seem to be a way to "follow" a thread: I keep losing threads in the Champion Concept forum (among others) that I want to keep track of: replies aren't always showing up, and sometimes I want to find a thread to make another comment before someone has had time to respond...but there isn't a place to track my own posts, or a way to "favorite" a thread so I can always find it reliably.

Having such a feature would really help encourage discussion: it's hard to have a meaningful conversation with someone when I can't reliably find the thread I was interested in again.