Pretty much a repeat of the last post I made.
P&G have new samples added once again. Go here, sign up or login and answer their quick survey on what products you already use (answering store brand usually gets you more samples), then choose the samples they offer you! Usually takes a good month or 2 to get them. There are usually some good coupons in there, too.

The P&G/Costco site has new samples as well, you can find them here. Same deal as the other one, but you have to have a costco membership.