post number does not dictate post quality, nor does it dictate general intelligence. For long time lurkers they become pepole you recognize and you come to either value or disvalues their opinions, you know how they post and you know how much backing their posts have.
For example everyone recognizing Fullbert and Lord Cuthbert, and we all know that their posts contain good points and their personalities, we know that they are well thought out points and interesting to read. As their posts we have read go up our respect for them goes up or down, i respect the points of these to as they are usually well presented and thought out, however i do not like Demented Teddy's posts for the same reasons. It's a matter of respect that grows from having pepole recognize you.