An anonymous reader writes: Politwoops is/was a site that monitored the Twitter feeds of politicians and posted any tweets that those politicians later deleted. On May 15, Twitter suspended API access for the U.S. version of Politwoops, and now they've blocked access to the versions of Politwoops running in 30 other countries. Twitter has also blocked access for similar site Diplotwoops, which focused on deleted tweets from diplomats and embassies. Twitter said, "'Imagine how nerve-racking – terrifying, even – tweeting would be if it was immutable and irrevocable? No one user is more deserving of that ability than another. Indeed, deleting a tweet is an expression of the user's voice." Arjan El Fassed, director of the Open State Foundation, which developed Politwoops, disagrees: "What politicians say in public should be available to anyone. This is not about typos but it is a unique insight on how messages from elected politicians can change without notice."