If This Then That (IFTTT) is a very powerful service used by many, that lets users connect various web services together in unique, interesting and useful ways. For example, you could create a "recipe" to automatically bookmark all favorited Tweets in a social bookmarking service such as Delicious; or send you an SMS message when one of your followers @reply's you. And so on.
Unfortunately, Twitter has recently announced policy changes that will effectively neuter this capability. According to Section 4A of the Twitter API Terms (https://dev.twitter.com/terms/api-terms), Twitter will begin strictly enforcing their Developer Display Requirements (https://dev.twitter.com/terms/display-requirements), "Exporting Twitter Content to a datastore as a service or other cloud based service, however, is not permitted." After these restrictions are in place, IFTTT "recipes" will still be allowed to post on their creators' behalf to Twitter; however "triggers" (which constitutes the bulk of what makes Twitter-IFTTT integration useful) will cease to function.
We feel that this is a needless restriction, and see it as a betrayal to those long-time Twitter users who helped popularize the service and make it grow and prosper. We humbly ask Twitter to reconsider this decision.