Streams 115

this implementation can retrieve an arbitrary list of user ids or screen_names with a single token
Are we sure that calls to the twitter API during a backoff period do not 'reset' the clock?  IE if we make 300 calls in 1 min and need to wait 14 to reach the 15 min boundary, would an unsuccessful call at 3 minutes result in the window being reset?  

If not, then this approach should work.