Like the subject says. I was active on another forum for a while and then they switched to a new version where people can 'like' other people's posts. It was quite a nice addition. With Facebook so ubiquitous now it feels almost second nature to hover over that Like button when you read something you... like, instead of posting a separate reply to say, "Haha I like this." But since "Like" is over-used and I know Glitch aims to be very different from other games/websites, maybe it can be a High Five or Thumbs Up or something else more creative.
Bring on Web 2.0!