I just joined Michael Gannotti's Facebook Group and also decided to join the Top 5 SharePoint Blog Networks on Facebook.

1. Andrew Connell [MVP MOSS] tagged with sharepoint, development,wcm.  Currently 96 readers
2. Michael Gannotti on SharePoint + tagged with SharePoint, Microsoft, Social . Currently 86 readers
3. SharePoint Magazine tagged with sharepoint, moss, intranet. Currently 55 readers
4. SharePoint Joel's SharePoint Land tagged with sharepoint, technology,microsoft. Currently 38 readers
5. Keith Richie tagged with SharePoint, Development,Music. Currently 12 readers

I would recommend that you also consider joining these Blog Networks and collaborate with other members.  Help improve the SharePoint community.   Another blog network that you must join is the SharePoint Team Blog.  It's great to see Microsoft use Facebook as a tool but they need to use it effectively.  With only 11 readers, maybe they should promote it more on their blog.  What do you think?