Most people already know Followerwonk is an extremely valuable tool for any SEO, I’ve been using it more and more of late for all manner of task related to social media stalking. (I’ve even been using it to find suppliers for eCommerce stores)
Even with the free access there’s a lot you can get out of Wonk, in particular from the Bio Search if you’re looking for connections. Anybody using this search often is sure to have experimented with some of the basic search operators already.
Disappointingly for search geeks though there’s very little documentation (I couldn’t find it at least) on getting more advanced with your queries unless you want to dig through the Sphinx reference manual. In truth it’s not a great read so I’ve pulled out a few gems which have been useful to me in the past, hopefully you’ll find a use for them too