Crew Wanted: How to tell who the scammers are on here?

[Thomea]

I just started within the last week responding to a few 'crew wanted' ads here, & so far 2 scammers. Men who are offering to pay for everything on the boat & a flight back to the US. (not offerings a flight to, only from) ....Offering me the world, but not asking for an interview or anything, & not even giving me any duties descriptions. Sheesh.

Any advise on what to look out for?

Anyone else getting this a lot?