great, now I feel like an idiot (I should.)
what do now
Get your computer checked for viruses, first of all.
Those ads are never true/useful and only serve to give money to the host site. They serve no purpose for you.
Second of all, get some form of adblock if you can suppress the hate mail from people who want that ad revenue.
Lastly, learn from your mistakes and just be patient enough to buy your own giftcards / IPads / memorabilia.