One of my most profitable methods for making money online is with CPA polls. Basically I come up with some poll questions related to current popular news topics and I tell my visitors they have a chance to win some sort of prize for voting. The prizes are usually CPA email submits, and I get paid from $1.10 to $1.70 for each visitor that fills in their email address. With these CPA polls, I can usually generate 80-200% ROI and by running several of these polls a day, I can make a nice chunk of change.
I've found that polls usually work quite well on the Google and Yahoo content networks. You can get very cheap clicks that way, and if you have a big enough keyword list (2000+), you can generate quite a bit of traffic to your poll pages. Currently, my favorite tool to generate keywords is to use Keyword Elite. KE2, the recently released version of the tool has some really great features that makes it easy to come up with a big list of keywords.
One thing Keyword Elite can do is add a word or phrase to the beginning or end of a keyword list. If I am doing a sports poll for example, I first like to create an initial keyword list and then add words like ESPN, Yahoo Sports, NYTimes, etc to each word in my list. With KE2, this is super easy, and I can multiply my list of keywords in no time flat.
The second feature I like to use is the Google ABC function. When invoked, Keyword Elite goes out and searches for my root keyword + each letter of the alphabet to come up with new unique keywords. These are keywords that aren't picked up by any other keyword tool and they really work well on the content network.
CPA polls are a really easy way for newbies to get into pay per click marketing. It teaches you about bidding strategies, keyword research, campaign creation and much more. Plus, it is a relatively inexpensive way to get into the game. Try it out, if you want to make money fast.