Facebook viral / word of mouth promotion

idea...

every month we have a new spore theme, and it has a great attention getting picture, like this month, the oily water bubble
http://www.evolver.net/water_spore
("water war")

just ask all the evolvers to change their facebook personal picture to be the spore picture, for a single day, or a week, whatever.

People only need to see their friend's pic changed once, or see it twice anywhere, to wonder "what's up?".

I think many people did it using the Obama-Joker pic at a time when Alex Jones was encouraging the postering campaign.

what do you think?