Add South Dakota to the list. We purchased furniture with the promise of a "$500 gas rebate". Turns out it was Free Gas Central. I have faithfully sent in my receipts for 4 months and have received nothing other than an email acknowledging receipt of the first months receipts and voucher. I finally decided to Google ""Free Gas Central" and found hundreds of compaints. I feel like a dope falling for this fraud. read full review »