Google sites offers you 10 GB free space.
sites.google.com/a/mydomain.com --- this may be your domain name.
example : http://sites.google.com/a/organic-city.com/intranet/Home
Use Google Sites to:
Plan club meetings and activities
Share info on a secure company intranet
Collaborate on a team project
Stay connected with family members
Google Sites makes creating and sharing a group website easy.
Single-click page creation
No HTML required
Customizable look and feel
Settings for accessing and sharing information
And it's free!