Buzzsumo isn't "free" by the way. They get you to sign up for a free account but all the juicy stuff can only be accessed with their pro account @ 99/moth. Now, that's not cheap, but from looking at what they provides, instant searching of any topic brings up any relevant share, tweet or pin by any blogger or influencer big or small... with the option of exporting that data.... that's really powerful stuff. Unfortunately it's a little outside my budget. I think if I could afford it, I wouldn't be croud sourcing in the first place
. Good to know about them though.