This really isn't much different from other OAuth providers eg Ebay. Maybe twitter is more explicit in asking that the user agent is kept secret, but many other

This really isn't much different from other OAuth providers eg Ebay. Maybe twitter is more explicit in asking that the user agent is kept secret, but many other providers ask the same thing implicitly, and are just as likely to shut off your app if others spam on your user agent. And yes Twitter is just like thousands of companies that have come before them that pay lip service to partnering companies.