This is a really tough question. I was recently reading a post on Brazen Careerist called Does Your Twitter Handle Belong in Your Resume? which tackled that very issue.
Here the author suggests that your Twitter handle (and other information such as blogs, etc.) belongs on your resume:
In my opinion, yes. I put my twitter handle in my resume. Where you decide to put your social media information is personal preference, but I decided to make my twitter handle very noticeable and included an entire section under “skills” where I include which social networks in which I am active.
While I don’t disagree, I want to add a big, fat caveat to this. You should include your social media profile ONLY IF you are extremely careful and professional about what you post. Writing insightful, meaningful content will help you land a job. Bragging about the great kegger last week will not (especially if you include pictures).
I’m open for debate on this one, but I would strongly caution you to sanitize your profiles before sending them to a potential employer.