Hey! I'm not sure if this is something you can implement or not, but I really wish we had it! It's a system to show support to a post. For example, Becky posts about how nervous she is about going on a trip. Sasha mentions in reply that she thinks going on the trip is a wonderful idea. In addition to posting on the thread as well, you could "star" Sasha's post, showing that you agree with what she says.

I'm terrible at explaining this, but a good way to see it is to visit another site I frequent, abovetopsecret.com. Here is a link to a thread using the star system.
http://www.abovetopsecret.com/forum/thread634156/pg1
If you log in, you will find blue stars at the top of some posts.

I think it could help in supporting others