Simply add a Google+ user number to the end of this URL (http://dlvritplus.appspot.com) to get an Atom PlusFeed of your public Google+ posts.
You can use these feed to distribute your Google+ posts to Twitter and Facebook using http://dlvr.it.
Note: PlusFeed is not affiliated with Google or dlvr.it. Google does not officially support atom feeds of Google+ posts. Accordingly, the continued operation of PlusFeed Google+ feeds cannot be guaranteed.