My accounts: Twitter hacked? GMail hacked? Computer hacked?
noodle: this is what i would do if i were in your shoes, in this order:  - change your email password immediately.  just in case.
  - fix the title of this article because its misleading.
  - inspect those emails a little closer.  they might be bogus.  could be spam/phishing.  
  - see if you can get a password reset from twitter to see if there's an account registered to you.

act appropriately on what you've found.