ermm.. i totally agree with the voluntary part..
i guess, if ya insist being paid for giving advice,
then start a consultation firm or something...
knowledge should be free..
only the utilization of the knowledge..
like building an application.. or a system
(which normally comes with blood, sweat and tears..) should get it's respect
(in term of payment, or copyrights)
but still, it wouldnt hurt to say thank you either..
to people who helped you out, or give some suggestion..
depends.. if you wanna give em money
(if you seems to have plenty of it.. or dunno what to do with it..)
then i guess it'll be okay..
cheers;
-jassh
(hmm.. pizza.. that'll be cool..)