Google AdSense allows site-specific targeting

From Search Engine Watch:

Google will now allow its advertisers to decide which AdSense sites will display their ads. They can make either an "include" or "exclude" list. This is an excellent move by Google to counter click fraud. However, it may shut smaller and newer publishers out of the advertising game, since they are most prone to click fraud activity. The real question is whether the revenue hit that results from allowing exclusions will be made up for by increased advertiser confidence.