Near the beginning of March I started my account with Swagbucks.com (note: this is my referral link). At first I was skeptical and thought it might be a pyramid scheme, but now I'm really glad I stuck with it.
Since I started my account I have earned enough swagbucks to get $10 in Amazon.com gift cards and am halfway to my next $5. This was done all on my own without the help of any referrals. Whenever I search the web I use their search engine first, and if I don't find what I'm looking for I try the search engine I used before. Each time you search you have a chance to win up to 50 bucks (at least, that's the most I've seen). I usually make about 10. Those of you who are on my facebook have probably seen the posts from when I've won bucks this way.
There are also "free" bucks you can earn everyday by taking the poll, going through the NOSO path, and visiting the Trusted Survey page. I also take the surveys if I've got more than a 50% chance of qualifying. For 15 minutes of answering questions about which movies I want to see I can get 100 bucks, so why not? They also have tons of videos you can watch on the site, giving you three bucks every time you watch 10 (most I've watched were under 2 minutes long and you can still do other stuff while they play).
Right now they are doing Mom Madness on their blog. Every week day you can earn 6 bucks by voting for your favorite mom, until the ultimate mom is crowned winner. It's fun and interesting to see who wins each round; the bucks are just the icing on the cake.
I really suggest those who search the web a lot like I do (and even those who don't) sign up for this service. I would love for you to use my link as they match all referrals first 1000 bucks (which equals to ~$12 in gift cards) but I'm not suggesting *just* because I would benefit. I'd feel bad keeping this opportunity to myself.