Personaly I use now Chrome 'cause it is fast and stable and there is extensions now.I don't really like firefox it has always been slow for me.I really love Opera too witch I was using for years but there is only one thing that really annoys me it the personal bar not working like the bookmark bar of others browser.You can't middle click on a link if it is in a folder in personal bar.Oh and I have lot of issues with gmail and google docs right now with opera (only since v10).
So I use chrome and wait for Opera to correct this 2 points to switch
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