I have never been one to send a thank you PM/Text/e-mail etc, after an appointment. There have been so many times that I have been left speechless, had such a great time etc, that I wanted to say "thank you!!!!" I just always worry about it coming at the wrong time, and the boss, wife etc. seeing it. The simple solution would be to PM, but ECCIE is not prevalent in all geographical areas.
I want to send thank you's for great appointments, and taking time to do reviews. What do you guys think? Do you appreciate it, or just as well not hear back?