Thanks Matt, I think we both agree that Google doesn't use +1's directly in your algorithm. But are you implying there are no SEO benefits to posting popular content on Google+? Google does use PageRank and anchor text, 2 things present in Google+ posts that aren't passed as easily in Facebook and Twitter. It seems to me that a popular post on Google+, shared and linked to by well known authorities, is just like earning a high authority editorial link - and this is a bit different than most other social media platforms.
Now, if you tell me you treat Google+ differently in a way that blocks link juice, blocks anchor text and doesn't pass link equity, then I think I would have to rethink my thesis. Regardless, I think we're both on the same page here. The goal is not to accumulate a massive amounts of +1's (and I'll amend my post to make that clear) but to share high quality content on Google+ and build your influence through this channel, and this can lead to real world success.
My argument is that Google+ as a platform passes actual SEO value, and I don't think this is a bad thing or something that needs to be debunked. Feel free to disagree if I'm way off base here.