"You need to communicate these 5 things within 10 seconds / 1 screen of text:
When the change is coming
How this affects you (or “This does not affect you unless X”)
What action you need to take (or “You do not need to do anything”)
Why this decision was made (can be high-level/’spun’)
You can complain here"

"monitors your system for changes to your registry, drivers, and first-time programs and provides you with options to undo any unwanted changes. The application's site judiciously provides a list of pros and cons that are spot on. Pros: It's lightweight and only runs when you need it, it detects most important changes that can happen on your system, and it's configurable. Cons: It's not a real-time monitor, so you'll only be alerted of changes after the fact, and it doesn't automatically clean up messes for you—you still have to identify and tell it what you want to reverse." via:lifehacker

enables users to subscribe to be notified of changes to nodes or taxonomies, such as new comments in specific forums, or additions to some category of blog. Once enabled, all nodes will have an additional link that allows the user to change their subscrip

track all editing on your site. A page is provided with a list of all revisions and comments in chronological order.

a cross-platform application to visually compare and merge files for Windows, Mac OS X and Unix

a freeware web page update monitoring program - it saves you time and keeps you updated by automatically checking web pages to see if they have changed.

This free service monitors the web pages that interest you and notifies you by email when they change. You might like to monitor the web pages of your work or former work, clients, customers, industry groups, competitors, friends and family, hobby sites,