To add to Fred's thoughtful response:
a) No one here, neither staff members or other regulars are paid one cent to answer questions. We are all volunteers. So, when someone like yourself who obviously already knows a good bit about Photoshop comes along with nothing but question after question, and doesn't participate in the forum in any other way (eg, by helping others, by discussing the background behind all their requests, etc.), it's easy for the volunteers to feel that they are being taken advantage of, being treated as servants, etc.
b) Our members are scattered around the world, and so, have different expectations with respect to how courtesy is expressed, how much "small talk" (i.e., discussion not related to the question at hand) is appropriate with people who are helping you but whom you don't really know, etc. etc. This is analogous to the question of how friendly should a student be with their teacher, and this obviously varies from culture to culture. In addition, we understand that language differences can make subtle social interactions difficult.
So, my recommendations would be for you to:
a) Take a moment and read over some of the other active threads in the forum that you are not directly involved with. Consider helping out by offering advice to others in areas in which you are knowledgable;
b) Tell us a bit about yourself and the projects you are working on;
c) Don't worry about coming across as being overly familiar. A nice balance between familiarity and formality is always the best approach.
d) And, as Gedstar suggested, from time to time, let the people who have helped you know that the advice they have given you has actually been helpful to you. That's what every teacher wants to hear, no matter what country or culture you come from.
Best regards,
Tom M
Moderator