Tabs are not unique to FF anymore, IE7 has them as well. |
Along with all the other great "features" of IE7 *rolls eyes*. Notice that tabs have been around in many other browsers but not IE until now. Microsoft is playing catchup in the feature game of internet browsing, because their browser application is built mostly for intranet (different than internet) and local browsing. If you're an advocate for IE as an http browser, i hope you have Ad-Aware run every night, because you're going to go through a spyware nightmare.
Not to mention the background logging of your sites that takes place even with cookies disabled

.
Tabs are not implemented as well... for example, some of the FF 2.0 features include:
Being able to auto-open new sites in a tab.
Being able to restore the state of the browser including all tabs and their sites in the case of a crash (whether or not it was due to a FF crash. If windows explorer crashes and closes ur FF, the program is still smart enough to take you back where you were).
If you haven't noticed, http internet is Microsoft's mortal enemy (since it is the realm in which google thrives). Their (edited from they're omg i hate me) support for such things are, and always will be, lacking in advancement.
In fact, i believe the insurance that Vista would support FF is a not-so-surpressed admittance of this