Link
That link is to avoid having to install silverlight, but if you want to do it the regular way you can sign up for everything through here:
http://www.microsoft.com/australia/vistafacts/fact.aspx

http://tonerrefillkits.com/-right side of the page-enter your email

http://www.weddingdaze.mgm.com/ -first 2008 -enter Code: WEDDING2008 -it was first 2008, so they are probably gone by now.

http://www.surveymonkey.com/s.aspx?sm=7bwxa20NfjkUp_2fupdNqVoQ_3d_3d

http://walmart.triaddigital.com/enhancedrendercontent_ektid29932.aspx

http://walmart.triaddigital.com/enhancedrendercontent_ektid30392.aspx -sample link is on the lower left

http://www.getmax.com -click enter now, and check the box on the form that says “Please send me one of three limited edition printed posters for free.”

http://scottoline.com/Site/Bookplates/

http://survey.confirmit.com/wix2/p584491434.aspx -you can choose: Guide to project management, Futurewise, or 33 strategies of war from Profile Books