From April 7th, 2014 to November 18th, 2015, 100% user give 5-star rating. for Auto Load New Posts for Google+™ chrome extension.
[UPDATE] No longer works with the new G+ layout that's rolling out 11/18/15, but hope to see update. I'm glad I found this extension, now that the stream will still load posts automatically while I'm using the notifications drop-down panel (which is off and on constantly, about 90% of the time I'm using the G+ tab in Chrome). Would like to see an option to pause instead of having the "New" posts blue button show up when I scroll down to read new posts.
Very useful for G+. Instead of refreshing your stream to get new content every time this little addon does it for you. It does what it promises!