Note: PlusFeed is not affiliated with Google or dlvr.it. Google does not officially support atom feeds of Google+ posts. Accordingly, the operation of PlusFeed Google+ feeds is subject to change without notice.
2. Automatically post your Google+ posts to LinkedIn using dlvr.it
a) Go to dlvr.it and create an account with your email + password.
b) Enter your Google+ feed URL from step 1 above
c) Click on the LinkedIn icon and authorize dlvr.it to post to your LinkedIn account.
d) Follow the LinkedIn process to authorize dlvr.it to post to your LinkedIn account.
dlvr.it will now automatically post your new Google+ posts to your LinkedIn account. Posts will link back to your Google+ posts at plus.google.com.
Your finished route will look something like this: