RSS feeds are not officially supported by Google Plus yet, that’s bad if you want to follow a specific user on the new social networking site. Sure, you could add the user to a circle to read all (public) messages on the Google Plus website, or visit the stream of that user directly to access the new messages.
No worries though. There’s a new service called google plus Feed available that turns a user’s stream into an RSS feed. Just like the above mentioned GTweet, this service is also hosted on Appspot.
Google Plus Feed is such a service. It is hosted at Appspot with barely any information, so take it with a grain of salt. Could be gone before you can blink with the eye.
Just visit a user’s Google Profile on Google Plus to get the ID. You find it in the web address of that page, it is the only number there. I have highlighted the ID for you in the screenshot below.
Now that you have the ID, add it at the end of the following URL: http://plusfeed.appspot.com/.
That is your RSS feed URL. You can now add it your favorite feed reader and subscribe to the user’s updates.
You can repeat the process for additional Google profile RSS feeds if you like. It it likely that Google plans to add RSS capabilities to the profile natively. For now, Plusfeed offers a fast way of creating feeds for Google Profiles.