Person calling claims to represent a sweepstakes company that I entered visiting a sponsored web-site, and that I've "qualified for the big $1 million dollar prize", and they need more information to enter me for the next level.  Person I spoke with would not tell me which website, or give me the name of their company, or where they were calling from.   I just told them to go to hell and take me off their phone list.  The second time they called (from 412-346-8832),  I gave a phoney name, address and phone number (the local FBI office), and they said, "Yup, we have you in our system!", and after wasting a good 10 minutes of their time, I told them to go to hell and take me off their call list.  When you call the number, a robot gives you the option of being entered in their sweepstakes or getting taken off their call list.  Classic rotating phone number scammer.