10 Great Web Font Combinations...I like Clarendon and Trade Gothic together (No. 9).
4 Awesome Resources for Creating the Best Adobe Muse Websites | Muse-Themes.com
Adobe Muse Keyboard Shortcuts
Homepage 15 Inspirational Examples of Minimal & Clean Web Design
Okay, it's not REALLY social media, but it is web-related and good for authors to know for their own website. Top 10 Fonts Web Designers Love [Infographic] (good free font list)