I'm also wary of a community so tightly focused around one guy. I have only good things to say about Yudkowsky or his writing, but a site where anyone is far and away the most active and influential writer sets off alarm bells. Despite the warning in the death spiral sequence, this community heavily revolves around him.
Yeah, it's a problem. I'd even go so far as to say that it's a cognitive hazard, not just a PR or recruitment difficulty: if you've got only one person at the clear top of a status hierarchy covering some domain, then halo effects can potentially lead to much worse consequences for that domain than if you have a number of people of relatively equal status who occasionally disagree. Of course there's also less potential for infighting, but that doesn't seem to outweigh the potential risks.
There was a long gap in substantive posts from EY before the epistemology sequence, and I'd hoped that a competitor might emerge from that vacuum. Instead the community seems to have branched; various people's personal blogs have grown in relative significance, but LW has stayed Eliezer's turf in practice. I haven't fully worked out the implications, but they don't seem entirely good, especially since most of the community's modes of social organization are outgrowths of LW.
if you've got only one person at the clear top of a status hierarchy covering some domain
For what it's worth, if Yudkowsky and gwern gave me conflicting advice on some arbitrary topic, then all else equal I'd go with gwern's opinion. The two of them focus on different things, though, so I don't know if this matters in practice.
A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
* Randaly
* shokwave
* Barry Cotter
A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site!
Note from orthonormal: MBlume and other contributors wrote the original version of this welcome post, and I've edited it a fair bit. If there's anything I should add or update on this post (especially broken links), please send me a private message—I may not notice a comment on the post. Finally, once this gets past 500 comments, anyone is welcome to copy and edit this intro to start the next welcome thread.