londrum - 8:10 pm on Sep 4, 2012 (gmt 0)
it would be interesting to hear what AdWords users think about interest based ads.
seeing as their ads can now appear on many more sites, i assume that the cost of each individual click would be less, although their overall spend would be up (because the ads are being shown that more often)
can AdWords users tell whether a click came from a targeted site or an IBA one? i suppose it makes no difference to them, because at the end of the day both kinds of user are still targeted.