I have this theory that Geminis make the best social media professionals. As a Gemini myself I can confirm that one of our most notable traits is our ability to adapt in social situations.
Adaptability is key to being successful at working with social media. As you can see below I have worked with a wide variety of companies.
The most important part?
Respecting the companies brand, whether it be serious, playful, or quirky, and making it your own.