It's easy to be respectful for an hour. Showing consistency is important to me if I'm putting my name under your handle as safe to see. Sites like P411 do a ore screening for members. They have your info and I feel more confident verifying someone with someone who they are slightly more accountable (you and I know TER isn't fool proof).
Posted By: ctcaman but there are many many hobbyists that would be left out in that situation that are very good people. One and done isn't bad. There are ladies that multiple times are wanted but that isn't always the case. If the guy is is nice, clean and respectful, why not whitelist after only one encounter?