"[censored] is the premier automated link-building tool. Through the use of this tool you will see a significant increase in the number of unique visitors to your site, as well as see your site jump in the search engine result pages."
I think it adds links to your webpage on a lot of different webpages, that's one of the ways google determines your pagerank in the results. Google will blacklist you though if it's too blatant... (most software like this is)