One particular blog posting has focused my attention on my Social Media presence. Courtney Seiter (@CourtneySeiter), a Content Creator with Buffer, wrote about creating a professional bio for your four major Social Media platforms (Twitter, LinkedIn, Facebook & Google+). She packs a lot of excellent info into her article.
Some of the tips do not translate well to the casual user's personal profile pages, unfortunately. However, the one thing that most social media sites have in common is the usage of profile pictures, or header/background pictures.