Hi, I am the creator of Favimon! Thanks for the link and the feedback. The game is still in beta - I'm working on making it more challenging, improving performance on mobile browsers, and a few other things. Favimon is basically a wild idea I had a few months ago - I've been amazed by the traffic it's been receiving.
As a few people have pointed out, each time you encounter a favimon it has a new set of actions, randomized from a pool of actions that correspond to its classes (such as 'blog', 'shop', or site-specific classes like 'google').
Favimon was recently awarded Most Original in the Mozilla Labs Game On 2010 competition: https://gaming.mozillalabs.com/games/winners
You can follow development on Twitter: http://www.twitter.com/favimon