One thing I'm liking much more is the manners about upvoting and downvoting on Snapzu. It's more appropriate to just not upvote in a situation as opposed to just downvoting something, i.e. you would upvote something firstly, neither upvote nor downvote secondly, then lastly downvote if you felt it was needed. Also, I like that the profile gets a picture and there is experience to gather with leveling up. It makes commenting and posting more rewarding than karma, I feel, because you can clearly see your progress as it grows.