Peter Svensson's review of Chrome includes this:
"At work, I often have 40 or 50 tabs open in Firefox, grouped in different windows depending on which topic they pertain to. Frequently, Firefox would slow down all the other applications on my computer, then seize up completely."
In fact, since Chrome shares so much code with Firefox, I'm still wondering how easy it may be for developers of Firefox extensions to do easy ports of their plug-ins for Chrome. Even if Google itself needs to deliver an equivalent to Flashbock, that doesn't seem like the world's tallest order. And if Chrome quickly gets extensions ported over to it, that would be one of the best developments possible for this new open source browser.