I recently played Minecraft with someone from the forum and it was a lot of fun. I searched through the threads here but only was able to find a minecraft server that isn't active anymore because it was private.
I found a 24/7 free-to-play english server with a lot of useful and fun plugins and very friendly staff. It provides a great infrastructure but isn't too crowded.
As I'm not sure whether it's allowed to post the server information here, please pm me if you're interested in joining.
I'd be so happy if others would like to play there, too! ^-^
Have a nice day,