Go read this awesome post by Authoress at Miss Snark's First Victim.
A Tweet by Any Other Name
And if your profile doesn't say flat out that you're a writer or an author, go fix that.
Here's what my profile says (and yeah, after I read that I checked to make sure I wasn't being wishy-washy about it.):
Writer of suspense, speculative fiction (aka dystopian, futuristic,
post-apocalyptic... pick one, they all work), and urban fantasy for the
Be proud of who you are and what you do.
'Nuff said. Peace out.