Don't put all your eggs in one basket.
Some people will dislike LW for various reasons. For example, they don't like talking about superintelligent machines and Singularity, because it feels cultish. Or they thing that rational talking is cold; or that the LW environment is hostile to women. Or whatever else. So these people will ignore LW and everything that is here. So it would be nice if the good ideas are also available somewhere else.
(For similar reasons I think separating SI/MIRI and CFAR was a good idea. It you want to convince people about usefulness of rational thinking, starting with singularity is often not a good strategy.)
I agree, but make a distinction between thinking it's bad that too few people are posting on LessWrong while many are posting in a billion other places instead versus thinking that there should not be multiple groups of rationalists.
I am all for multiple groups of rationalists. What I am not for is this community scattering across 100 different blogs.
Ever since Eliezer, Yvain, and myself stopped posting regularly, LW's front page has mostly been populated by meta posts. (The Discussion section is still abuzz with interesting content, though, including original research.)
Luckily, many LWers are posting potentially front-page-worthy content to their own blogs.
Below are some recent-ish highlights outside Less Wrong, for your reading enjoyment. I've added an * to my personal favorites.
Overcoming Bias (Robin Hanson, Rob Wiblin, Katja Grace, Carl Shulman)