You can get 20 rep by asking or answering a single — literally, one — half-decent question. My last answer (a few days ago, so I'm not exactly grinding) netted me 90 rep. Alan Kay has 2,429 rep from one answer and one question.
I would estimate that there's a vanishingly small number of people who are completely unhelpful in Q&A but would be fabulously knowledgeable in chat. I mean, there's you, but I just don't suppose there are that many others. If it keeps out every spammer and blocks three people who would legitimately be helpful, that's probably the best filter ever.
I think you're not considering the possibility that this chat is specifically for the Stack Overflow community, not for people who have no interest whatsoever in Stack Overflow. Your complaint is like saying, "HN wants me to register to comment? Screw that noise, I'll just hop on IRC and comment there!" You're perfectly welcome to do that — but you still have to register to comment on HN. Different communities have different and often somewhat arbitrary standards.
It seems pretty good as far as things like this go, and I'm sure it'll do ok, but a big part of anything like this is network effects: people go where other people are.
My guess is that SO is currently big enough to attract viable communities for several of these "channels", but that many others will end up as ghost towns, and that, overall, IRC will continue to be 'bigger' for real time chat. It's probably a big enough space that this can be successful in its own right, even if it's not huge, although I think I will tend to prefer IRC.
Also, signing up for HN is way faster than having to ask/answer a question.
Not to be rude, but StackOverflow is a Q&A site. Why would you not just ask the question you had there instead of trying to answer questions to make it to the chat rooms?
You'd probably get enough reputation from that question to be able to ask your next one on the chat rooms if you wished.
I went on IRC countless time to get answers, and depending on what, when and where you ask questions, the answer ratio is really low. Think about it, some pretty good people are camping on IRC, but sometime they are going to sleep. SO is asynchronous by nature and there is a real motivation for people to formulate good answers and good questions. SO is the resume of the future!
> "You can get 20 rep by asking or answering a single — literally, one — half-decent question"
So what you're saying, is that any spambot could thwart the system easily, and the arbitrary restriction is silly, and mainly just means this will not take off beyond fanatical SO users (Which is fine, if that's their aim).
IRC has developed fantastic ways to keep out spammers and idiots. And the methods don't usually involve things like this.
No, I'm not saying that. In practice, AFAIK no spambot has ever acquired more than 2 rep. Spam is flagged really fast, and it's also downvoted at an astonishing rate. I imagine it would be possible for a spambot to thwart the system, but it would be pretty hard, actually. It would require a much greater degree of agility and coordination than spambots tend to have.
For perspective, it would be far easier to spam the front page of Hacker News, and yet most people agree that HN's system works pretty well.
I would estimate that there's a vanishingly small number of people who are completely unhelpful in Q&A but would be fabulously knowledgeable in chat. I mean, there's you, but I just don't suppose there are that many others. If it keeps out every spammer and blocks three people who would legitimately be helpful, that's probably the best filter ever.