Is EvC becoming a haven for the crazies?
I don't think what you are seeing is so much, more crazies, as it is, less sane people. During Dover we had dozens of relatively well-educated well-spoken people defending creationist doctrines and pseudoscience in a very interesting and entertaining way. Now we get maybe one a month, this puts the less gifted trickle into stark relief.
I like Slagger's bus stop motif, but I don't think of the crazies as the busses but rather as, you know, the
crazies. One will march up, tape up a weird sign from her church and stagger off, another will sit on the bench and shout crap about 9-11 at irregular intervals, another definitely wants to get somewhere but is having a huge amount of time explaining exactly where so anyone can understand them, another is definitely headed to the hospital. And then off to one side there are some toughs, who sort of intimidate people but aren't actually getting on the bus at all, just killing time.