To be frank I never try to impress anyone. The thing is some people are good and helpful, but most of the people you meet online are the exact opposite. Trying to impress those kind of people will end up badly. Mostly in flaming.
Anyway there are some people I have met through forum hoopla and webgurubb who are really nice. You don't need to impress that kind of people. So why bother impressing other epople when you have got your own life. Try to impress yourself, that will not go bad!