Make HELP the default channel for new chars.
This would help to avoid the problem that every new player has with finding (and using) the HELP channel.
Of course a complete revamp of the chat system would be the best solution, like it has been suggested a few times over the course of the last year. There were some good ideas for it.
But making HELP the default channel would be a quick fix to enhance the experience for new players a little bit.
I wanted to suggest this last week but didn't, but when I saw the posts below today I decided to suggest it.