We at one point experimented with n-brain's una (http://www.n-brain.net), but it didn't fit our needs at the time. You might want to check it out.

Indeed it does! Also, keep a bottle of sanitizer handy!

We customize emacs. Two people on the team (both happen to be named Sam) push the customizations. See: Sam Merritt's http://github.com/smerritt/spiffy-elisp/tree/mast...

Also check out Sam Tesla's recent post showing how emacs can be used to create a programming environment: http://blog.alieniloquent.com/2009/06/25/an-examp...