Is it possible to specify/narrow down which keywords you want your ads (as a publsher) to display on your site? Something you can put into the HTML before the AdSense javascript to help tailor the ads?
yes there is/was a way of adding hidden text between some tags, and i think its legal as well, but it takes a week or so for adsense to fully comply it. google it mate, i am sure theres info about that.