We've been wondering what logic Facebook uses to control spam freind requests on its platform. This article goes into it a bit.

The 3 types of platforms.

Quoted: Marc Andreessen, technology entrepreneur, Internet, Mosaic, Netscape, Opsware, Ning

Quoted: Sharing your numerous online profiles is great, but real value comes in finding your friends on all of your social networks. This is made possible through the combination of technologies like XFN and FOAF, which together can describe who you know and how you know them. TypePad, LiveJournal and Vox produce FOAF (and soon XFN) automatically, and Movable Type has always had this capability. But it's not just our products -- services like LinkedIn, hi5, Twitter, Yelp and Last.fm all support these technologies.

A great piece of thought on aggregating the social graph so that all sites can use it.

White Label Social Networking chart on TechCrunch. Possibly the most data-heavy and useful entry on techcrunch that I have seen.

Quoted: Damn the Facebooks and the MySpaces. The last time we checked, there was this thing called the internet that had 6 billion users. It's time to take our personal data out of Mr. McGregor's little gardens and put it back where it belongs -- free and open on the open web.

This ladder model of online participation is more useful and nuanced than the pyramid models I was looking at only months ago. 52% of online users have no desire to "participate" in any social media online.

A nice Blue Dot mention while reviewing the new Snipitron.

Quoted: Snipitron, a new social bookmarking site for academics, professionals and students, launched in pre-beta mode on Friday. On many levels, ...

Blue Dot gets afavorable mention in TechCrunch again, this time when referring to a new competitor - coRank.

Quoted: CoRank launches out of private beta this evening. It's best described as a cross between Digg and Bluedot. It has a Digg-like user ...