I added a Activity feed for Mobiles (Palm pilots, Blackberry, etc..)
Look on the menus of the sites beside the "My Page" tab will be the [MB] tab "Mobile"
By using this google link http://www.google.com/gwt/n I have added the Mobile version of the Activity RSS feed for your convenience.
You can use this link for any website on the internet to convert it to Mobile.
Example:
Click on this link http://www.google.com/gwt/n and paste http://the-gtl-networks.ning.com in the text spot provided and hit enter and the site is then converted for you. Send the link to your mobile unit and enjoy the mobile version. I find that it works great with RSS feeds. But have fun and try it with any site and see what you come up with.