The interactions you described are all perks obtained by being socially engaging.
Humour, life advice, posting fun or engaging content, relieve people through conversation and by showing others empathy. All of these actions help gain popularity and likeability and motivate people to take a personal interest. By not having interest in being socially engaging it results in not reaping the benefits of doing so.
I think you really hit the nail on the head. Let me be honest, then, without being slapped for it. I am lacking in empathy.. it's not that I do not care about the plight of others.. and it's not that I think I'm better than others.. it's just that this inclination to share and help and all of this is somehow missing. You know what, I think there's a more accurate name for what i'm missing: reciprocity.
In addition, having some mild Aspergian traits, I have naturally poor comprehension of the mechanics of socializing and most crucially, I lack "theory of mind." That is basically a key to empathy: it allows one to project the basic understanding of the way you like to be treated, onto others. Try to stretch you mind for a bit and imagine what it's like to have
no access to that mechanism: It requires one's method of communication to be split into 2 separate branches which is extremely mentally exhausting: first I have my own natural inclination of what to say in a social setting; then I have to take the time to play that back in my head to figure out "if someone said the same to me, would it come across as normal?" The best I can do most of the time is only go with my natural inclinations (learned from past interactions), and hope it comes across well: obviously, too often, it doesn't. Granted, I have more time to think of a response online in forums, but the results still show I'm getting a lot of things wrong.
About those "just doing things for nothing, and expecting nothing back; and then getting a lot back" I'm sorry to show skepticism to you. But that's not usually what humans do. Common sense shows that altruism is not real, *we all have desire* for popularity and a hundred other things and will do what it takes to acquire those things, even if it's just in an online forum. Spartan mentioned this idea that popular users are more acutely aware than most of "basic social politics" so it is a little unsettling to me, then,
that in forums for people with social problems, these behaviors show up anyway, and a handful of users tend to get the lion's share of attention. I've seen this in forums for people with Asperger's (!?), ADD (another socially delayed group; unless you're "just hyperactive"), and more than one social anxiety forum.
Am I going on some kind of witch-hunt or something? No, so please don't accuse me of such. I'm just frustrated, and trying to figure out some way to fight against the clear deficiency I have in this area.. in other words to improve general likability online a little bit, which might even translate into better results in real life.