This issue has came up two years ago (http://groups.google.com/group/ twitter-development-talk/browse_thread/thread/4e6b9b0ae26db3bf/ 84a9f110942a07b9?lnk=gst&q=since_id+favorites#84a9f110942a07b9).
The feature is still working, and still undocumented (as far as I know). Am i wrong? Is it documented somehwere other than its api (somewhere like global search parameters), and is it supported? If not, what is that status update on this issue (will it be supported, can it be removed without warnings)? -- 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?hl=en