Ask HN: What are some blogs of really smart people you check regularly? 12 years ago
Seth Godin has a blog that's short and sweet: http://www.sethgodin.com/sg/
http://blog.penelopetrunk.com/ is interesting when it comes to career advice.
http://www.codinghorror.com - technology related.
http://www.themiddlefingerproject.org/ - another smart blogger and not very mainstream.
http://randsinrepose.com/ - writer of managing humans. has an impressive blog.