I LOVE this one. It adds a toolbar that lists the current site and its rank, country where the server is, company, and risk rating. It prevents loading of known malicious sites.

http://www.toolbar.netcraft.com

Cool pc password manager. Stores web passwords and puts them in automatically if u want

http://www.download.com/3001-2381_4-8597943.html

Enjoy

B

NIce, the toolbar also works for Firefox in linux.