E-mail me your experiences. The support is super and the software is free. Now comes the problem. If you are fortunate enough to have a nice flat bed scanner - great. This will make point and click easier.
Some sites charge a fee to link.
You may want to check a site out before you decide to add your link. Then hit the re-load button on your browser. It's kind of like banner roulette - the entity running the exchange has an automatic system that rotates the banners. The whole idea boils down to getting more traffic to your site. This site requires a reciprocal link.