I want someone to create a tool like [url removed, login to view] for me.
The user can insert a page and his email, and if that page changes, it alerts him through email. Inside this email you will provide a link to the tool, where a page will show what changed (something like a Wikipedia diff).
All users must login and can see all their "alerts", add, edit and delete them (as Google Alerts).
I want this developed in PHP language and using MySQL database.