Finding authoritative sources on Google+ - is there a tool?

[reidsteven75]

I'm looking for a way to find authoritative sources on Google+ on certain subjects.

I define an authoritative source as someone who is in a lot of people's circles, and the content they curate gets shared, +1, and commented a lot.

The subjects are variable, but for an example:

What's the best way to find authoritative sources on Google+ on the subject of auto technology.

Does anyone know of a tool that can do this?
If you can't recommend a tool, how would you approach this?

[Chris.Menke]

Steve, here are a few to check out:

• CircleCount www.circlecount.com/ track your followers and analyze your shares. See how many followers you've gained over time.
• FindPeopleonPlus www.findpeopleonplus.com/   research, outreach, and link building. Sort by keywords, profession, country, and more.
• ** SharedCount** API  www.sharedcount.com/documentation.php   combined statistics of Google+, Twitter, Facebook, and more, the SharedCount API puts a ton of social data at your fingertips.
• Google+ Ripples  To view Ripples for a public post in your stream, just click the dropdown arrow at the top of the post you’re curious about and click View Ripples.  Google+ Ripples creates an interactive graphic of the public shares of any public post or URL on Google+ to show you how it has rippled through the network and help you discover new and interesting people to follow.
• All my + http://www.allmyplus.com/ is a useful tool for evaluating the activity and engagement of specific profiles

[reidsteven75]

Hey Chris,

Thanks for the tool list!

I think I'll find a purpose for each of these tools in the research I'm performing; however I think I'll have to develop a custom solution for a starting point.

Unless there is another way out there?