tracking FB share and other social share clicks

I've ignored proper tracking for social sharing off of my sites a little too long.

I mean I have the buttons (share on FB etc) but never properly tracked the conversion of how many uniques it takes before someone shares ... AND ... how many new visits that yields.

Much like knowing your TAF system's stats, I bet there's some golden data in here.

so I'm curious...

Has anyone here tracked clicks or even full traffic funnels for their social sharing buttons on their pages??

Care to share any stats?