What is the likelihood of getting freebies from Internet ad deals?

[Sir Dr. Professor]

I see these kinds of ads all the time over the Internet, especially on social networking sites like Facebook. I'm wondering, what actually is the likelihood that you will get some of these items, like Mac notebooks, Blackberry Storms, iPods, etc.?
By the way I'm not trying to generate income here. I'm just wondering if some of these deals are worth it.

[pka]

MINIMUM

ONCE YOU START YOU WILL BE ASKED TO COMPLY TO ONE REQUEST AFTER OTHER TILL IT GETS STRETCHED TO THE POINT WHERE YOU GET FED UP. EVERY TIME AFTER THE QUESTIONNAIRE YOU WILL BE CORNERED WITH QUESTIONS ASKED, SUCH AS, " DO YOU LIKE THIS PRODUCT?" / "WILL YOU BUY IT?"/ "WHY WILL YOU NOT BUY IT".

[srini]

100%
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[cwa member]

Do you really thing they are gonna give you something for nothing?
No way those are just scams!
It would be cheaper and easier to buy one yourself!

[kathie]

You usually have to answer questions and fill out surveys. Sometimes you even have to buy products or pay shipping on "free" products. Don't waste your time.