As an Etsy and Scoutmob Shoppe artist, I have to say that Scoutmob is awesome! I was apprehensive at first since they demanded a pretty large minimum output, but after a few weeks I was selling almost double what I was on Etsy. I still haven't stopped selling with Etsy, but I'd recommend Scoutmob to any artist.
Beware though, their 'curation' team is pretty scrupulous. Many of my maker friends have been rejected because their products 'didnt fit the market'. Also depending on your product, you may not make as much profit per item, but usually the volume will make up for that.
I haven't used their local deals app much but for Shoppe they definitely get a 5/5 from me.