Can anyone point to language in the revised API Terms of Service (http://dev.twitter.com/pages/api_terms) that implies "no new Twitter clients"? I'm reading it, but I can't find the smoking gun.
"... developers ask us if they should build client apps that mimic or reproduce the mainstream Twitter consumer client experience. The answer is no." ... "If you are an existing developer of client apps, you can continue to serve your user base"