leave your leaf

seems that a lot of sites are using this 'leave your leaf' approach to inspiring interaction with their site/brand. to see your name appear online, i'm starting to wonder if this application goes further than just mild narcissism. for which entities/brands would this be even more successful?













i tried to leave a leaf and it wouldn't validate my birthday...

here's another site with a similar approach
















i couldn't think of any words of hope to give. i'm not very creative i guess, or maybe too cynical.

look, it's another one!

















i've found three of these today, and i was just surfing, not even looking for them. do they give a sense of community, or are they old already?