Since all this BS happening with the DNMs, the best option would be to go for direct deals with vendors. Why isn't anyone creating a website that offers multi-sig 3rd party services? That would be the most suitable option.
Vendors create their own website, or someone just creates a forum where vendors can advertise their products, including their email and PGP key, after seller/buyer came to an agree to make a deal, they go to a multi-sig third-party holder website and they just make the deal. This is the safest option we have right now.
What do you say?
Yes. Do it.
This idea an similar have been floating around for the past few weeks. It will catch on but someone needs to actually write that code and maintain it. I'm not even sure that's illegal (but probably is)