Blogger Communities Ping.fm Social News 
Techipedia: Tamar Weinberg
JUNE 30, 2008
After using both Plurk and Twitter pretty heavily, I’ve come to the conclusion that Plurk is best at its features for community-building, whereas Twitter succeeds more with its interface that bolsters information-sharing. I think plurk is more for networking and twitter more for tweeting news/events/links.
Techipedia: Tamar Weinberg
DECEMBER 10, 2008
Social News (Digg, Sphinn, Mixx, Reddit, Tip’d, and a whole load of related sites) Submitting only your own articles and posts to social media sites. Social news is about reciprocal relationships. Submitting a story to a social news site that is completely off-topic. Excess converts to spam.
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