GOOGLE

http://www.google.com/ig/directory

http://www.google.com/microsoft.html

http://pages.google.com

http://groups.google.com/intl/en/options/

YAHOO!

http://my.yahoo.com

http://next.yahoo.com

http://research.yahoo.com

http://360.yahoo.com

MSN

http://join.msn.com/General/products-list