Old school communication: email list
The con email list has been around since 1995 or so and it's still going strong. I understad it's called the con list because it was originally used to organize X-mas Con: a New Orleans Hacker-con held most years between Christmas and New Years. It's a time when those 504ers living elsewhere come home for the holidays and hang out with the ol' hacker crew. The list is still used to organize the con, but it's also the place where Louisiana hackers talk shop. Sign up for the list here.