As soon as I saw the thread title I knew it would be by Refalm
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I used to love Opera before I found Mozilla, and then FireFox.
A nicer, faster browser, and not being a MS fan, an alternative to IE.
My favourite feature has always been the Mouse Gestures.
There is a plugin for FireFox, but it's not the best of plugins.
I tried Opera the other day, just before v8, it was looking good - and feeling fast, but im very much a FireFox fan these days
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I prefer to use Free software, too.