Is there a Firefox extension that will notify you when a website has updated?

It's easy for websites with an RSS feed, but what about for others? I was thinking something like WebMon, but as an extension. After all, it makes sense if website updates come to me through my web browser.

http://www.btinternet.com/~markwell/webmon/

Answers:
I believe so. CheckForChange

https://addons.mozilla.org/firefox/3028/" title="https://addons.mozilla.org/firefox/3028/">https://addons.mozilla.org/firefox/3028/...

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i dont know sorry but i think there is

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i do not think so
i'm on firefox now but i think there is..... .....n't

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You might check out Technorati

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Yep,
Install : http://releases.mozilla.org/pub/mozilla.org/extensions/check4change/check4change-1.0-fx.xpi

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