Nope not at all. Some of us are an integral part of the board in terms of answering questions, so much so that we have a HUGE number of posts. Others simply have to post on every single thread, weather they have any input or not. I'll let you decide who is who, but if you notice closely enough it becomes quite obvious. (btw, this is NOT an invitation to start a flame war, it's simply an honest answer)
Also remember, some of us have just been here so long that if we just post once a day it adds up. I was like the second person to post on the new board for example. At this point I am lucky to ask one question, or answer once a week and yet I have a huge number of posts. It really adds up over time.