Thanks for this - great post, and I shall try not to make some of these mistakes, though I think perhaps I may have made a few of them already in my short four months of blogging...!

Interesting post particularly regarding copyright issues - isn't there always a source when you "pin" something, so wouldn't that make it reasonable to share as long as you aren't doing so for directly commercial purposes, and it was only a small piece of the overall web content? Or is this all just too much of a minefield!