yes... be courteous b/c tech's like it when people are nice...
I do computer stuff for people all the time and love it when people are nice, start conversation, etc... makes the whole deal much more appealing, seeing that I'm very much a people person...

h:
I don't always accept the offers, but sometimes people refuse to let you refuse, lol... so as someone on the otherside, it's always a welcome gesture...