A few general rules have served me well with Craig's List
No pic = not buying
Phone number unable to receive texts = not buying
If I don't like your price = not haggling and not buying
Make me an offer = don't bother
Can't meet me on Saturday morning = don't bother (conversely, if you're selling and the buyer isn't showing up first thing Saturday morning, 100% he's going to flake out and blame 'the wife')
Perhaps those first two are a bit much, but the sort of people that do not have a cell phone with a camera on it are the sort of people that do not possess anything I want to buy. My mentally handicapped janitor has a smart phone. My last few deals haven't involved a single spoken word until I showed up in person.
Those guys on various forums that can swoop in at a moment's notice during business hours and scoop up those great deals are all unemployed layabouts defrauding disability and/or live with their parents.
