Google+ doesn’t have RSS feeds, a technology that arguably is the foundation for much of what we think of as Web 2.0. (Thank you, Dave Winer!) But that doesn’t mean that you can’t read public posts in Google Reader; it just means you have to work at it!
Step 1. Find Google+ User ID
To set up an RSS feed, for yourself or for someone whose public feed you’d like to follow, you need the Google+ identifier. This is the string of numbers in the Google Plus URL. Mine is “108740570618849247850.” Highlight-copy.
Step 2. Get The RSS Feed URL
Visit http://plusfeed.appspot.com/ and paste the copied Google+ ID after the link:
Step 3. Test!
Press the return key after you paste the URL to make sure the feed is working. It if is, you’ll see an XML file that looks like this:
To subscribe, paste the URL into your favorite RSS reader. (Subscribe to my feed!)
That’s all there is to it! Hopefully Google will implement RSS before the field trial ends.