Twitter Profile Mistakes Writers Should Avoid

"1. No description of who you are in your profile: Cheeky 140-character descriptions of your abstract qualities sound cool, but they make it very difficult for somebody to find decide if they want to read your work. Simply describe who you are, what you do and what you write. [...]"

http://www.mediabistro.com/galleycat/5-twitter-profile-mistakes-writers-should-avoid_b32527