It's because this place and many message boards are a reflection of society.
There are 3 classes of members here just as we have the poor, the middle-class and the wealthy in the real world.
The three web forum factions consist of
- the ass-kissers (poor)
- the middle-class (most of us)
- the elite (wealthy)
The elite get props (via responses whether in agreement or not) across the board (pun intended) because who they are perceived to be. How special they are perceived to be. And how knowledgeable (from a specific topic out to personal philosophies) they are perceived to be. This also usually relates to a high post count and/or mod status. Further description isn't really necessary, it's too simple (think: popular kids in high-school).
The ass-kissers are just that. They kiss enough tookas that their posts flow over the brim of the board. In many instances they are responded to because, as unflawed as web forum elite are, they still suffer from the most common of human desires. Everyone loves having their ego catered to. This attracts the elite to respond... even in some inane way.
Then you got the middle-class. Most of us. The majority number of members who aren't around enough to be remembered, who haven't achieved "elite" status (spending more time might help) and simply don't have it in our make-up to kiss-ass. Collectively we create the majority of posts and collectively our posts are the majority that go overlooked.
And, both end-spectrum groups think the same thing when reading our posts, "I don't know THAT guy... whatever." The elite doesn't respond because to do so would be to open the door to the club just a crack and the ass-kisser doesn't respond because, well, it's obvious-- we're NO ONE... why kiss our butts?
So the webforum world spins. One day I will make ranks here. I will have an avatar. People will care if I ask the question "Do women fart?" People will respond when I post a review of an HD television set. People will stand and applaud as I crush the rogue troll with humor and wit. One day I, too, will be victorious on MR!!!