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About this Add-on
Page Update Checker (aka PUC -- pronounced "Puke") is a FireFox extension that automatically checks to see if web pages have changed.
How to Use:
Once installed, you will be able to right-click on any page in Firefox and select "Monitor for Updates." The PUC options will open up and you can select how often you would like PUC to download the webpage and see if it has changed. To return to the options menu later, select "Tools" -> "Page Update Checker Options..."
Click the homepage link to find the PUC Wiki and share your Update Checkers!
Check out custom Checker add-ons by following the homepage link.
In particular, Tim Packer's Phrase Checker will check a page for particular phrases/regular expressions.