I've been doing some work for the past 6 mos with UpWork and during that time have been invited to work on jobs that were scams at 10 times. UpWork does pretty good trying to screen them but I think they could do better. Only thing is until a scammer gets a sucker some people may find it hard to tell they are job scammers. UpWork has a way to contact them and they answer pretty quickly so that's better than freelancer.com that scammers run wild on. It's too bad there are so many dishonest people. I just want to work a little to add to my disability but I guess that's too much to ask for in this troubled world.