In my search for different cases of social media I have stumbled on a lot of lists about organizations using social media. To make them easier to find I post them all here for reference. Special thanks goes to Peter Kim for starting the huge list in A Wiki of Social Media Marketing Examples.
Ray Schiel’s list of uses of social media by category: online video, applications, widgets, social networks, blogging, podcasting, crowdsourcing, bookmarking and tagging, microblogging, photosharing, wiki, virtual worlds, mashup, word of mouth, pr, etc.
15 Top Social Media Agencies. Who are the top dogs on the business. Learn guys. Social media companies can be research focused, software heavy, app developers, monitoring services or consulting firms. The social media agency is one that helps companies extend their brand and marketing through training, long term strategy, and execution.
It’ll take a lot of time to go through all that material but if you know a really good resourece then please add it in the comments.