In my experience, I've never talked to a rude shemale. I've talked to many online and they were pretty much all very nice. And the one I met and had fun with in real life, earlier this year, was one of the sweetest people I've ever met...naughty but with a lovely sweet personality!
I've found that if you are open and honest and not rude yourself, people will be nice to you...that even goes with the anonymity of the internet.