I guess. Sorta. It's listed as a draft entry, and I'm really only including because of the novelty of coming across a word that's been added (or proposed to be added, perhaps) as recently as June 2006. The word itself doesn't really strike my fancy in any way. It is, however, the first "computing" entry that I've noted.
2. Software that automatically displays or downloads advertising matter, often in the form of unwanted pop-up windows and banners when a user is online.