> If you don't care about showing off then you won't publish anything. People who are actually altruistic won't tell you about their altruism.

My point is that I think your thesis is too cynical. Many people start out writing their blogs or answer questions on public forums with the intent of trying to help other people out. The motivation can be of the form "I solved this problem and I am going to write about it because maybe my solution will save someone else time" rather than "I solved this problem and I am going to write about it so that everyone visits my website and I get famous." Maybe they become more motivated by vanity and blog metrics later on if their blog takes off. But, many people write stuff online with the intent to help others out and not solely out of hunger for respect, admiration and recognition.

> Today, anyone can broadcast. But that doesn't mean that everyone should broadcast. The old gatekepers weren't perfect but they served a necessary purpose. Who are the new gatekeepers?

You lost me here.

In my opinion, you try to make a distinction where is none. What is the difference between showing off and helping others in the context of technical questions on blogs/forums? Yes, you help others by providing solutions/advice for dificult problems. And you get satisfaction from the fact that you succeded where others stumbled and you let everybody know it by posting it online. You prove your value to a group of people, which gives you a feeling of inclusion -> important motivator.

In general, there is no such thing as altruism. You always get something out of helping others that keeps you going. Nobody is truly selfless. Altuists are the species which died out long time ago.

Meh, Ayn Rand is wrong, lots of people do things that they'd rather not be doing for the good of their family/friends/society. I'm not sure why so many people adhere to her antisocial musings. Sure some people only do things that only make them feel good. Altruism exists despite all the Randians attempts to morph it into something else so they can feel better about being greedy/self-centered/self-serving like them.

> If you don't care about showing off then you won't publish anything

I want to agree, but how can we explain near-anonymous StackOverflow profiles who have brilliant answers in them, but no way to identify who the actual person they are?

Anonymity doesn't change the equation. No one on hackernews knows who I am but I still want the recognition of my peers (upvotes) which is why I'm posting here.

The fact that everyone ultimately wants peer-approval means we need to create participatory structures in which people are rewarded (with approval) for doing useful things. Stackoverflow is a perfect example of this. People gain karma by answering questions that other people ask.

"Everyone should have a blog" is the opposite of this. It's feel-good nonsense along the lines of "everyone has their own subjective truth and all truths are equal". If we tell everyone to publish it will become near-impossible to find voices worth hearing. It's like saying you should answer every question on stackoverflow whether or not you know the answer.

You're leftyted, I see you!

People see different facets of our identity, only God sees all of them.

In some cases our limited online presence might represent a more authentic version of our 'true selves' than we present in [the rest of] "real life".

>"it will become near-impossible to find voices worth hearing" //

Isn't the OP saying there that we all have a voice worth hearing. You're right that it would be harder to find the voices we could extract the most value from; but realistically that's probably already impossible.

Most of my Stack Overflow karma has come from edits.

Just like in real life; I'll underwhelm the average sleuth with the amount of badges I have vs. the work I've actually done.

> Today, anyone can broadcast. But that doesn't mean that everyone should broadcast.

I don't agree here. Perhaps "not everything should be broadcast" might be better?

I agree that everyone should broadcast, just let me filter it on the input side.

> Who are the new gatekeepers?

I would posit that the new gatekeepers are algorithms. For example, Google search algorithms, Youtube recommendations, Facebook news feed Edgerank, etc.