The Many Faces of Spyware

"ShopAtHomeSelect, CoolWebSearch, Searchex, IEDriver and are called many things: spyware, adware, scumware or the euphemistic PUPs (for 'potentially unwanted programs'). But there's no disputing that, by any label, programs that monitor users' online behavior, legally or illegally, are a big business and a big headache for computer users and IT administrators."

[ Yahoo! News]