Social network in a Gadget?

Reading the Google Gadget FAQ, it sure sounds like we'll see a form of social network springing up around this space soon. Is anyone working on this?
You can now have Friends, Profiles, Updates, Notifications, Messages, Friend invites with permission controls. Sound familiar?

iGoogle Gadgets

Friends

Who are friends in iGoogle?

For development purposes, you can add friends through the friends manager gadget included with the developer tools. You can only share activities with other friends who have access to the developer sandbox. This is not the final network that will be used in iGoogle. Users will have full control over who their friends are and will be able to easily modify their list of friends. Stay tuned for details.

Profiles

What are profiles in iGoogle?

For development purposes, you can modify your profile data (displayname and thumbnail) using the profile gadget included with the developer tools. This is not the final profile or data that will be used in iGoogle. Stay tuned for details.
Updates gadget

How often can a gadget post an activity to the Updates gadget?

A gadget can post up to 5 activities per user per day. For gadget development and testing purposes, these limits are not implemented in the sandbox. Posting activities requires explicit permission from the user granted during the installation of a social gadget.
Notifications / Messages

Will iGoogle support notifications?

Yes, you can send messages to users using requestSendMessage. Note that this feature is not yet implemented in the sandbox.

How often can a gadget send a message?

A gadget can send up to 10 messages per user per day. Sending messages requires explicit permission from the user granted during the installation of a social gadget.
Gadget Invites

Will iGoogle support inviting friends to add a gadget?

Yes, gadgets will be able to call a dialog box, prompting users to invite their friends. Gadgets cannot send invitations without the user initiating sharing and selecting friends. This feature is not enabled in the sandbox. Stay tuned for details.
Gadget Permissions

Can users control if gadgets can post updates, send messages, or send gadget invites?

Yes, a user will be asked to grant permissions when the user installs a social gadget.

OpenSocial Tutorial for iGoogle

And the rest…

Designing great social applications can be difficult, but the next steps are up to you. There's already a lot of documentation available, a helpful group for asking and answering questions, and a blog to keep you up to date. Here's to your application!