A simple little tutorial on how to create an RSS feed for Google+ profiles.
The first thing you need to do is find the ID of the profile you want to create an RSS feed for. The profile ID is the set of numbers in the URL for the profile. For example the link to my profile is, https://plus.google.com/109614442178446929048, so the profile ID is 109614442178446929048.
Then just take that URL and put it into your favourite RSS reader.