Handy tools for iPodSweepstakes (and strongly suggested):
NetZero's Private Phone - Free # for yourself (voicemail only) to use for those offers that require a phone #.
Google Documents - Use this to keep track of offers completed, I'd suggest putting the Name of the Offer, ID, Date Completed, Date Accepted, and Amnt to be Credited. Keep track, its key.
FAQ - Member Support - Handy link in that section that'll allow you to send in a ticket regarding points not credited, wait one week before sending in a ticket.
Check your email daily for special offers that might not be offered on the website, including limited time offers that offer you more points than usual.
Easy and quick offers (for me): UnlimitedFreeGifts (Walmart), Easy Cash Rewards, Consumer Beat F150, Nation Survey, NPD, Own Your Life, The Net Panel (42 Inch TV), Survey Spot, and SurveyPanelGroup. These all credited nearly same day, however your mileage may vary. Some offers are as simple as entering a zip code or email, others require a full survey to be completed and confirmed via email.