londrum - 7:30 pm on May 12, 2010 (gmt 0)
one of the best known political blogs in the UK (guido) seems to be crammed full of ads these days. he's got all the sizes that you mentioned, text ads, image and video ads too -- the whole lot. most of them are untargeted, so i don't imagine his click rate is too good. maybe that's why he's got so many ads on it.