I was extremely surprised this evening to see a public Google+ post appearing in the #8 serp position for a food-storage query that I typed in as I was putting away my groceries. The query was a two word search in the form...
[storing widgetfruit]
Roughly 3-million results returned.
What was surprising is that I'm in no way connected with the poster, not even remotely. I'm seeing the same results on different browsers I just tried... signed in to my Google account on one, not signed in on another.
The post that ranked is a 10 word post... that's all... has the two words of my query in the post (but with an adjective modifying "widgetfruit" in between, so it's not an exact match), with no title or traditional SEO signals... and it isn't what I'd normally consider an answer to the query. The top results on the page and the results that followed this position #8 result were much closer to what I would expect to be traditional results.
I tried a bunch of other searches in the same pattern, and couldn't get another Google+ result to show up in position #8. It is perhaps a position to watch.