Below is a screenshot of a new homepage module showing on Facebook aimed at driving friend importation through Google / Gmail. The unit sits above the newsfeed and asks, Ryan, Who's Missing? It then shows Facebook icons from three friends who tried the "automatic Friend Finder" and encourages me to do the same (... the fact that I previously have done that is a different note!). Simple idea - but I love how Facebook continues to:

1. eat their own dogfood by promoting content via your social graph. Facebook promotional units look exactly as they should: simple messages with social context. 2. even with 500,000,000+ users - Facebook continues to focus on driving users and virality.

When clicked, Facebook authenticates through Google and then suggests friends tied to your Gmail account: