Why exactly did Eliezer stop writing here and started writing his new articles (on intelligent characters in fiction, angel investing etc.) on Facebook or Tumblr instead?

What's LessWrong's collective mind's opinion on efficient markets hypothesis? From Facebook feed I vaguely recall Eliezer being its supporter, it also appeared in some of the Sequences. On the other hand, there is a post published here called A guide to rational investing, which states that "the EMH is now the noble lie of the economics profession".

I have a well-read layman's understanding of both the hypothesis and various arguments for and agains it and would like to know what this community's opinion is.

I'm looking at setting up my own website, both for the experience and to allow hosting of some files for a game I'm making. What I'd like is to register a domain, probably (myrealname).com and/or .ca, both of which are available, set up a wiki on it, and host a few(reasonably large) files. Thing is, I have a computer that stays on 24/7, and I'm generally competent with computers, so I suspect I can probably get by without paying for hosting, which appeals to me.

Can anyone link me to guides on how to do this? My Googling is turning up shockingly little, just "Pay someone for hosting!". I've registered domains before, but never done any hosting.