the original poster of this thread had the “spider senses” mentioned …

I must say (imho) trust your senses (spider, bat, Betazoids …)

in general, the idea of a minimum count of posts was welcomed, except for some users who are regulars and never post … well -shrug- …

another thing that popped into my head was:

how bout we offer all prospective buyers (and sellers) - HELP -

(hence we would act as a 3rd party MAYBE hold the money escrow till unit is shipped and arrived, or we want to see proof of ID, recommend having a phone number supplied, double check pictures of units with daily newspaper and / or serial number)