When booking shows, its important to get creative. 

Check this great article out from SingingSuccess.com for great ideas:

Building A Fan Base With Community Planning

If you can find opportunities that align with your passions and perhaps meet the needs of local organizations, you'll be surprised at the doors that open!

If you haven't already tried the popular FriendFeed or Ping.fm, then you will be pleased to know that there are plenty of sites called  Social Aggregators that help you "syndicate updates" to all your social networks from one platform.

In fact, here is a link to one of the best lists of Social Aggregators we've seen on the net thus far:

The Big List of Social Aggregators | Search Engine People | Toronto

If you are an artist with recorded music on the internet and are not registered with SoundExchange, you may want to check the SoundExchange Unpaid Artist list to see if you or someone you know is on it (and then get signed up whether you are on the list or not):
http://plays.soundexchange.com/jsp/unpaidArtistList.jsp

Why sign up with SoundExchange?  Becuase they pay artists/labels internet royalites.  From the SoundExchange website: 

"SoundExchange is an independent, nonprofit performance rights organization that is designated by the U.S. Copyright Office to collect and distribute digital performance royalties for featured recording artists and sound recording copyright owners (usually a record label) when their sound recordings are performed on digital cable and satellite television music, internet and satellite radio (such as XM and Sirius).   SoundExchange currently represents over 3,500 record labels and over 31,000 featured artists.   Its members include both signed and unsigned recording artists; small, medium and large independent record companies; and major label groups and artist-owned labels."