When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
After some research, most of the free mods seem worthless.
Correct, I really don't see much of a point in them either. However, here is a thread with some info, I'm sure the OP can use the search function if he wishes to learn more - Link.