It's been requested that I attempt a new twitter directory. I had an idea for one, but it seems people want Literary Agents for YA books. I'm not quite at the point where I'm ready to start doing a exhaustive search for them, but if you know of any I'd like to be told. Comment on this post with the name, twitter name and agency name of any literary agents you know of who deal with writers of YA novels and non-fiction.
In the meantime, if your looking for agents readwritetweet is following a number of them.
When it's ready, the actual Literary Agent Twitter Directory will go here.