Social Media reading, and a couple extras
A bunch of intersting sites I've come across at one time or another I thought were worth posting. Most of them are social media marketing blogs, besides the first few. Their appeal really depends on how deep your interest on Social Media Marketing(SMM) and Social Media Optimization (SMO) is. Not sure what category the Happy Cursor falls under, otherwise good reading!
Daily MemeThinking Blog
Influential Interactive Marketing
Social Media Marketing blog