I have yet to deny anyone...but also I never allow the subject to be brought up with those kinds of people I think might hassle me. The few times I've had to be tech support:
1. the guy's PC is hot. mid-40s case temp. I'll talk to him in a few days about it--prolly just need to neaten it up inside, or maybe work outa nasty dustbunny.
2. friend's PC I specced out but did not build wouldn't boot...don't even remember why, but it was a simple problem.
3. friend of friend's box won't boot and locks during XP setup...but is like 100 miles away...annoying that I can't sit down and fix it.
4. Whenever my neighbor has a problem, but he's cool.
I hate being harrased about things, but I *like* to solve problems. Thing is, I'm not going to bother for anyone who doesn't understand the time and effort involved. I started trying to do websites for people, and got burned real early there. The lessons carry on over...