I built http://www.likelist.ca over a weekend and a few days. (Free App Engine Account)

I built it to surface the likes, favorites, +1's, ... that tend to be hidden on most services. Basically about.me + Pinterest for your 'liked' content.

[edit]: If it is not clear enter your user name in the textbox

[edit]: source: https://github.com/nabilt/Like-List