Yes, it is possible to easily make money on the internet! None of these will provide a living, but extra spending money is always nice, and I've personally gotten legitimate money from of them, so I know they're not scams. These aren't work-at-home methods, they're not going to replace your day job, and they won't make you rich, but they do provide something to do in your free time.
So, without further ado, here are my experiences with several different legitimate sites for making easy money online:
SurveySavvy is exactly what it sounds like, a site for taking surveys. I've taken surveys for a couple months through them. Your experience will vary depending on your demographics, but I tend to get about a survey every day or so, of which I qualify for about one third. The ones I do qualify for take about 10 minutes and are worth $1 or $2, although I've seen ones for as much as $5. For me, the real money through SurveySavvy has come from being linked to other panels. They occasionally send out surveys for "exclusive online advisory communities," and I qualified for one of those. Through that community, I've made $55 in Amazon gift cards in about 10 weeks with about 10 minutes per week of work. Highly recommended. www.surveysavvy.com
Ebates is a site that pays you to shop online. Sound too good to be true? It actually is true. They work by directing customers (you) to online retailers, who pay them a percentage of your purchases as a commission. Many sites do that. However, ebates then turns around and gives you back part of their commission. I've only used it for a couple of large purchases like computers for my family. I keep forgetting to use for little purchases like on Amazon. I've made about $35 through ebates so far. Payment is via check mailed to your house. The definite advantage of this site is that there's no effort on your part beyond remembering to visit the website before you shop. Highly recommended. www.ebates.com
3. Amazon's Mechanical Turk
Mechanical Turk is sort of a freelance site for jobs that take a few seconds. Called "hits" (human interface tasks), these are a wide-ranging variety of "jobs" for third-parties ranging from performing a Google search, to tagging photos, to proofreading a document, to writing an article, to surveys, to audio transcriptions. Each task completed gives you a small reward ($0.01 - $1.00 in my experience), paid in Amazon Payments credit. The advantage of Mechanical Turk is that there are always many things to do and the payments are faster than other sites. The disadvantage is that you have to be careful because many jobs want you to do things like sign up for newsletters or complete scammy type online offers. These are against the terms of service, but Amazon doesn't seem to very closely police the jobs offered. Again, it doesn't pay particularly well, but it's a great way to kill time and make a little extra money. I've probably only made about $10 from here, but it was all while "wasting" time. www.mturk.com
I don't know much about Swagbucks yet, but I have a friend who's made $20 or so in Amazon gift cards without too much effort. You get points for things like filling out surveys, or for buying products or services through sites through them (similar to ebates). www.swagbucks.com
Good luck! Please post your experiences and reviews of sites!