Especially nowadays when nobody got time to really meet & know other people except social situations like maybe parties, bars, pubs etc. Do you follow your own intuition when "checking out" if someone is worth your trust, or maybe do you look for signs of talking badly behind someone's back etc. or do you give everybody same chances?

This applies rather only to males, as we all know how it works with females. Let's face it- males can be assholes too, especially if there are women around and they look at you as a 'competition' lol.