I'm most determined to NOT use social media for business growth. That said, I have a YouTube channel (abandoned, but I'm currently creating new content to upload, starting with a series), and I think I might complement it with a Pinterest account (I'm not sure how it'll work with a Greek audience; I guess I'll have to see when I get there).
I don't count on using You Tube and Pinterest as purely social though: I'm viewing them more as Search Engines, with a light social touch. Would this be leaving money on the table?