Firefox 3 surpassed by IE8 beta 2

According to a reviewer on the Cnet website: IE 8 beta gives other browsers a run for their money.

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In another feature, known as InPrivate, Microsoft allows the user to suspend caching functions while you surf. The scenarios for using InPrivate include when you're using someone else's computer, like for instance, when you need to buy a gift for a loved one without ruining the surprise, or when you're at an Internet kiosk and don't want the next person to know which Web site you visited. While you can currently clear the browser cache with a mouse click, it's an all-or-nothing action. InPrivate temporarily suspends the automatic caching functions, allowing you to keep the rest of your browsing history intact. Apple Safari has offered this feature for a while, but Mozilla Firefox does not.

http://news.cnet.com/8300-1009_3-83.html?tag=hdr;snav

Now if the reviewer on the cnet site had done, let's say, 2 seconds worth of digging amongst the extensions available for firefox, he'd have found an extension which incorporates that particular function (and has done so since the first half of 2007), which IE8 beta2 only now includes.

And it's called stealther 1.0.6, by Filip Bozic and was last updated on June 16 2008.

Technically the reviewer is correct.  The stripped down bare bone basics of mozilla firefox doesn't offer that function, in its native form.  But people tend to go with firefox, not only for the extra bit of security, but the freedom to mix and match the perfect add-ons that suit their own set of particular circumstances.