piatkow - 2:58 pm on Feb 16, 2010 (gmt 0)
Geo targetting is to assist the placing in the SERPS. For example to tag a .com as being in the UK. As far as I know, if somebody from a different location finds your site then they get served the appropriate local ad inventory.
There is geo targetting in Adwords which says "only serve my ads in country #*$!" but that is the country of the visitor not that of the publisher.
The profanity filter gets a bit silly at times. All I did was repeat the last letter of the alphabet, as in a well known brand of Australian lager!