Fireclip is a cool firefox plugin that enables you to monitor the specific portions of different sites. With fireclip you can select specific portions of any web page and put them all on a single page. Now next time you would not have to go to all those sites to check for an update in those specific selected portions of web pages, all you need to do to get updated is to just reload that single page on which you have put those specific clippings.
Activating fireclip is easy just hit ALT & Q together, or go to Tools, select Fireclip. Selecting fireclip will open small fireclip window in the left of the window. Now from this sidebar window you can start selecting your favourite clip with called “Select Clip”. All your selected clips will be shown in a sidebar tab called “My Gallery”.