Even the 'free' sites, such as Geocities or MSN, aren't always free. It depends on how many 'hits' you get and how much server space your site takes up.
In fact, my site on
www.geocities.com is going to start costing my money ($9 a month) because of the sheer number of hits to it. If I don't pay the $$, Geocities shuts it down during the day if the hits exceed my 'free' limit. Obviously that won't work here.
It would be great if 3FC can come to a 'commission' deal like
www.leanandstrong.com has with Netrition - anytime someone buys products through clicking on the Netrition icon at L&S, the site gets a commission! Just a matter of finding an e-retailer who will come to an agreement with this site...