This is actually a good point. Fortunately the Steem blockchain already has this enabled as far as I understand, there's just no good user interface for it. You should definitely add this to your request @jerrybanfield , or add it to your development timeline. Again, I'm no developer, but I know smart contracts and escrow are available but underdeveloped tools. @good-karma has begun working on this for his eSteem app as shown here. I do think an escrow system will be necessary to make the site feel trustworthy and legitimate.