I made $2000 in one month but that was for a Sh*T load of freelance writing ontop of normal earnings! 'm working on working for myself, more profit for less work!
that was wayy back in dec 07.. april 08 broke $14k.. i use a combination of Adsense, Kontera, affiliate sales and premium membership sales. everything i do is in my blog (which BTW has NO advertising)
$7,2xx back in April of 2007 revenue from numerous sites (~9); freelancing on RAC; shorting a few stocks. ^ that's how i did it