I don't know who exactly came up with the concept and who(s) has worked out all the detail, but you guys are genius!! More power @curie.
I hear what's said here about comments and responses too. A very important factor.
How do we make it more attratctive to comment and reply? I know there are one or two innitiatives rewarding comments and replies but it's probably clear by the sounds of it that they're not having enough of a desired affect?