If each visit includes 3-4 pages viewed -- not an unlikely number -- then that's 156,000,000 to 208,000,000 page views a month. If they are getting about $1.50-2.00 CPM (not unreasonable with the DoubleClick ads they are using, and not counting any direct sales) then that's $225-400K a month or $2.5-5 million a year. Not too shabby. Even on the low end of an average of two page views per visit and $1 CPM, it's still over $1.2 million a year, and that's being unreasonably conservative in both page views and CPM.