They asked everyone what blogs they wanted on the side panel when they redesigned the site. I don't think the list has been changed after they put it up.
Thanks for the information. In that case, I hope in the future there is another opportunity to ask what blogs are featured on the side panel. I don't know what anyone else is looking for, but as far as I'm concerned, I check these other rationality blogs as often as I check things posted directly to Less Wrong. I find Slate Star Codex, and Overcoming Bias, particularly interesting. Anyway, if other people gain similar such value from these other blogs, perhaps other blogs could be added in the future. I understand if each of us freely suggested what blogs ...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.