Facebook - why do you talk with someone on his wall, instead of over PM?

<p>Well, I think that you’re imagining this popularity the wrong way, Inquiline. What I meant is that for many people, number of wall posts (or number of posts on their wall per day, or number of inside jokes painted on graffiti walls, or number of pictures that they’re in…) correlates with popularity OUTSIDE of Facebook. I don’t mean that these people are trying to appear popular within a separate online community. They want to appear as if they have lots of friends to those at their school; they use their number of wall posts as a means to quantify their popularity.</p>