Weird Sun Twitter is a collection of similar twitter accounts who make high-concept tweets that are often vaguely inspired by LessWrong. Every Weird Sun has an icon that looks something like a sun, a username something like "X Of Y", and a biography something like "Z, THIS". The canonical list of Weird Sun Twitters is Grognor's list. Grognor is now dead, and the list is closed in his honor. Anyone seeking to become a Sun is advised to write down their thoughts in a small notebook which they carry on their person at all times. Eventually, perhaps, these musings can be published under the guise of a book of poems.
Concepts explored frequently in Weird Sun Twitter include "become good" (moral advice) and "have you tried X the problem?" (practical advice) where X is some (usually humorously abstruse) method of approaching a problem. Riffing on certain well-known poems is also sometimes popular.