3 (more) places to find advice and info on social media

Mashable  is a popular website for news and advice about social media. (There’s also Ragan.com , sister site to PR Daily , which publishes case studies and tips on the ways businesses are using social media tools.) Of course, there are also a number of talented bloggers producing content that isn’t as widely read. Want to read some of these posts? Windmill Networking shared  three content hubs you should check out. — Claire Celsi