The most telling change in the Terms of Service occurred in sentence #2 or paragraph #1 under section Rules of the Road.
It used to read: "We want to empower our ecosystem partners to build valuable BUSINESSES around the information flowing through Twitter." It now (since March 11, 2011) reads: "We want to empower our ecosystem partners to build valuable TOOLS around the information flowing through Twitter." -- Twitter developer documentation and resources: http://dev.twitter.com/doc API updates via Twitter: http://twitter.com/twitterapi Issues/Enhancements Tracker: http://code.google.com/p/twitter-api/issues/list Change your membership to this group: http://groups.google.com/group/twitter-development-talk
