What are some alternatives?
When comparing ChangeMon.Com and Feedfry, you can also consider the following products
Wachete - Track web page changes and get notified. Free Sign-up. Have all data in one place
Update Scanner - Update Scanner is a Firefox extension to monitor web pages for updates.
Visualping - Visualping is the easiest to use website checker, webpage change monitoring, website change detector and website change alert software of the web. Read more about Visualping.
Distill Web Monitor - Distill is a web monitoring tool. It can monitor RSS feeds, a webpage or a part of webpage. Alerts in the form of pop-up, audio or emails can be received.
WebSite-Watcher - WebSite-Watcher detects website updates and highlights all changes in the text. WebSite-Watcher monitors web pages, password protected pages, disucssion forums and much more.
FiveFilters Feed Creator - Create feed from elements (e.g. links) extracted from a given web page