Google+ now allows you to embed a public post into any* website. You'll notice in the example below you can interact with the post as you would natively on Google+, including expanding comments.
Here's an example from my Google+ profile:
Well isn't that just nifty?! Just click the drop down arrow on any public post and click the "Embed post" option.
All said, it's pretty neat to see all that Google is doing to innovate on the web. Between this and the (hopeful) end of troll-feeding on YouTube I still have hope that Google will continue to "make money without doing evil".
Want to hear us talk more about Geeky subjects like this? Come check out The Geek I/O Show (recording live on Thursday evenings at 9PM CST).