Additional -

If by "antimalware" programs you're talking about popup blockers and cookie removers, for the most part these are not really considered malware by most professionals. They're largely annoyances, and many AV programs and suites include them so you don't really need another program.

The hazard from cookies is that they can "track" where you go on the web, and many people don't like to have them doing that. Other than providing income for advertising department employees, cookies of the kind you want to block are largely useless, even if they are annoying.

Popups present the possibility that they'll show you a link that you shouldn't click, because it will take you to a place where distributing actual malware is the main purpose, or in rare cases, just clicking will download some malware. Recent Windows versions include a popup blocker, so if you're running the latest update of Vista, or any version of Win7, an additonal one is of marginal help.

Additionally, recent versions of the Google toolbar, which is "somewhat useful" for other reasons, should include both a popup blocker and a "cookie filter" (if you use Safe Search). Quite a few other "accessory programs" also include features of this kind.

Popup blockers and cookie crumblers, for the most part, don't delete anything. They simply "don't accept" what attempts to come on board, so there's less likelihood that multiple programs doing the same thing will destroy each other, and it's generally safe enough to have as many as you want. And it's almost impossible to avoid adding more of them with any "browser utilities" (or browsers) that might be otherwise of some use, so adding a separate program is probably superfluous.

The primary threat currently in wide circulation is phishing. Clicking anything can give permission for installation of malware that cannot be blocked by any program.

JUST DON'T CLICK IT. Learn to ignore.

And even if you block the malicious popup, one of your "friends" will probably post the link on your Facebook wall anyway, just to be helpful.

John