My account has apparently been hacked into, and when I logged in a moment ago it sent bit.ly links to all my online contacts. If you are in my contacts list and you get a bit.ly link from me out of the blue, DON'T CLICK ON IT.
I've read that simply changing passwords will make the problem go away, though I don't know for how long, and I will be doing so but I suggest you do as well.
~Inanna