Free online Website Building Tools

 

snappages.com
Office Live 
weebly.com
edicy.com
yola.com
   

Also one can Create CSS Based Web Templates Online using the following services

http://developer.yahoo.com/yui/grids/builder/ 

http://drawter.com/

Update : http://www.smashingapps.com/2010/01/25/13-easy-and-powerful-website-building-tools-to-create-your-free-site.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+SmashingApps+%28Smashing+Apps%29&utm_content=Google+Reader