There are many free classifieds that you can use to do this here are just a few I use and find very good
There is another great way to promote something and that is with a lens on Squidoo It cost you nothing and you will earn royalties as people visit your site. they have many function built in that can earn you revenue all you have to do is design your lens how you like on any subject you choice as long as you follow there program polices.
