Like GAIN on Facebook and get a free sample of GAIN on 8/10/10. When you LIKE Gain on Facebook, you will get an alert from Gain when the sample offer is up.
http://www.facebook.com/gain?ref=ts&v=app_4949752878
Last week they gave out Free 11 oz. bottles of Gain dishwashing liquid. I believe that they're only giving out a limited number of samples, so keep an eye out for their email!
http://www.thepromotionaloffer.com/gain/
This is the direct link