Many anti-spyware programs scour computer hard drives for those data-tracking files called cookies that we often get from Web visits. Microsoft 's tool does not. And <A HREF="http://news.yahoo.com/s/ap/20050625/ap_on_hi_te/spyware_word_wars">there are disputes aplenty</A> about whether certain widely used advertising programs circulating on the Internet are clean of spyware. No surprise, then, that there's little agreement on what should be considered spyware, and what adware is exactly. Or on whether adware, which delivers ads, is a form of spyware or a breed apart.