In order to leverage more on traffic building to my websites, I’ve just registered with goClick. Here are some comments and comparison with Google Adwords that I use as the first PPC SE.
goClick registration is much simpler. You can just register for free first and add your campaign. Then only you need to add fund in order to the campaign to be published. The minimum deposit is for just $10. The minimum price you can bid is just for $0.01.
The other good thing with goClick is you can view other people with higher rank bid. So you can know what price to bid in order to get your desired rank.
You can also always get the highest rank using goClick auto BidMaster that will adjust your ad to always be at the highest rank.
You can register goClick for free and have a look on the features.