Post to Google+ From Blogger

[UPDATE] This is no longer necessary as there is now a 'Share' function in Blogger.com

Thanks to Dirk_SG for this answer:
http://www.google.com/support/forum/p/blogger/thread?tid=30bef3268481af9b&hl=en

1. Get the feed url from your source (e.g. in Blogger scroll to the bottom get the url from the link where it says Subscribe to: Posts)
2. Go to Google Reader http://www.google.com/reader/
3. Add the feed using the Subscribe button on the left.
4. At the top right click Share and select the circles you want to publish to or Public