I'm sure majority of the people who devoted time into streaming Nostalrius on twitch.tv are finding out that Blizzard is taking action against people promoting the server with the DMCA. If you hadn't heard twitch has banned players streaming private servers (namely the newly released Vanilla servers) in the last few days because of Blizzards notice and inability to take legal action against the server.
Streaming could potentially help newer players, obviously provide entertainment, and attract more players to the already flourishing server.
I suggest that people interested in streaming continue to stream on an alternative site and the Nostalrius staff work with the community in order to keep promoting the server and the players who help promote.
Maybe have a streaming tab somewhere on the site?
or..
Your homepage could be the most viewed streaming player on your server.
These are just a few suggestions.. feel free to comment suggestions or address the topic.
Shameless Stream Plug: http://www.hitbox.tv/codednoob