Tons of Free PS3 Offers

Everyone has seen the hundreds of thousands ads for free PS3 offers. Has anyone tried them? I did once. The offer is usually some type of high-end electronic after applying yourself to thousands of online ads and maybe spending money to activate introductory membership that are hard to get out of. I never completed the program but didn't doubt that they would give me my free gift afterwards. However, I did not find it worth my time or energy. Some of the required offers actually forced me to spend money before I could apply for my 'free' gift. If I really wanted the item it would have been better for me to just buy it myself.