i have seen your goolge adsence, your ecpm is very heigh, i have not seen such heigher ecpm, may be this is the key you earn 1000 $
;( im earning around $1000 per month with 1100 to 1200 clicks. i dont know why my eCPM too high (from $6 to $50 depe nd on keywork and ip locate)
Apparently this guy does not know anything -- http://forums.digitalpoint.com/showthread.php?t=1903933
Well it is kind of high, but on my gaming site, which albeit makes a few cents a click, had about 4.5% CTR.
yes it comes from feeds. If you have joined adsense you will notice that first is from content and third is from feeds.