MIT people have come with a Firefox extension which allows you to write scripts, save a trigger for a specific URL. So next time you come back to the same page the script gets fired automatically.

Chickenfoot is a Firefox extension that puts a programming environment in the browser’s sidebar so you can write scripts to manipulate web pages and automate web browsing. In Chickenfoot, scripts are written in a superset of JavaScript that includes special functions specific to web tasks.

Here is an example on how I used it on a my Wordpress blog to filter post which contained ” PDF ” and author was “Manav”. If you try on your own make sure you are logged in.

1. go(”http://www.technospot.net/blogs/wp-admin/edit.php”)
2. enter(”PDF”)
3. pick(”Author”, “Manav”)
4. click(”filter”)

In real time you will be able to see the word PDF getting written on text box and then Manav gets selected and the Filter button gets hit . Now if you want to seach a site for regularly some of the keywords or may be some books like on Amazon. Just create a script and use it any time you feel like checking it particularly. Read more on chickenfoot