Here is what I have found so far...just did some random picks...
"Lots of Freebies here...1-800-UACESS"~~busy signal
"Free sample of a Vidal Sassoon hair product...1-877-872-7328"~~program has ended
"Free coupons on Downey Fabirc Softener plus a FREE Downey ball...1-800-367-3696" ~~ not in service
"Free sample of Rembrante toothpaste...1-800-548-3663"~~talked to a guy and he is sending me me a $1.00 off coupon of the toothpaste
"Free 1z Box of Purina Cat or Dog Food...1-800-215-3500"~~doesn't work