Shannon, Google's APIs do not have the necessary features for us to support it alongside the other networks like FB, LI and TW. I encourage other community members to vote/tell us why they need G+ support. We will use this information to push our case with the Google PM team.
I consider G+ a strategic choice for SEO. It's really incredible how quickly something from G+ is indexed and available in search, much faster than if the google bot finds content & indexes it on its own. For me, G+ is about SEO, it's why I push my team to use it.
All our customers are international students looking to study abroad in the United States. Google+ is very popular in some of our target markets, like India. So I know Google+ seems kind of lame and unimportant in the U.S., especially compared to the other social guys like Facebook and Twitter, but since it's drastically more poopular in foreign countries, it is important to our business. We would definitely like to see this feature.