[richdougherty]

I used to love reading this site, but haven't in a long time.

The only other place I know that discusses PL stuff is https://www.reddit.com/r/ProgrammingLanguages/. The discussion there's not always high quality, but sometimes there are interesting topics.

Does anyone know of any other good places where PL theory and topics are are discussed?

[BalinKing]

It's not centralized, but I see a fair bit of discussion on Twitter by following the researchers in the area.

[syntor]

Do you have any recommendations?

[eatonphil]

/r/compilers too, maybe.

[Vetch]

Adding cs and cstheory stackexchanges to the list.