Google Chrome will give a kick in the pants to other browser writers. That's good enough reason to like it.
Separate process for each tab with a process manager? I've been wishing for something like this for years, since I usually have over 100 tabs open. Figuring out which tab is eating all the CPU -- or playing fucking music -- is a pain.
> So Google "fixes" this by creating classes of similar objects behind the scenes.
Sounds like Self's maps: http://research.sun.com/self/papers/oopsla89.ps.gz
Self, as a language and implementation, is a goldmine of good ideas (http://research.sun.com/self/papers/papers.html). Naturally, popular dynamically-typed languages completely ignored all of this until recently; it's only been two decades.