I do INET support and there are other pieces of software that do similar things. New dot net Application and $clickthebutton, and lots of this gets installed with free programs like Morpheus/Kazaa/iMESH (iMESH is the worst).
Always read those user agreements, it usually tells you what else will be installed. Hint: If it "enhances you're internet experiance" you don't need it.
Happy computing!!
Graham