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Check out Google's Chrome Experiments:
http://www.chromeexperiments.com/

The 10 best reasons for using Wysigot:
1.Wysigot captures and monitors your favorite sites (web and ftp).
2.Wysigot highlights anything new.
3.Wysigot informs you of anything new (alarms).
4.Wysigot allows you to surf off-line.
5.Wysigot resumes interrupted downloadings, even large files (mp3, zip, avi, exe, etc).
6.Wysigot makes searches within entire sites.
7.Wysigot also monitors and backs up your local and network files.
8.Wysigot manages your favorites (IE).
9.Wysigot does not slow down your PC.
10.Wysigot manages an unlimited number of documents!

URL: http://www.wysigot.com/

More info: http://www.wysigot.com/int/wysigot.html