I would love to see a "Thanks" button on every post. When you click the thanks button on a post or response, your user name would appear on a line below the post indicated you gave it thanks.
It dramatically reduces posts that quote an entire response and add "+1" to the bottom thus reducing the clutter in a thread. A professional forum I'm a member of has this feature and I'm realizing that I'm really missing it!
Don't play what's there, play what's not there. --Miles Davis