Red Eye and Red Streak readers who have been wondering which paper was going to fold first when the Tribune started giving away the Red Eye for free this year got their answer this week: the Sun-Times is ceasing publication of the Red Streak with Thursday's issue. Although the Sun-Times originally promised to keep publishing the Red Streak as long as the Red Eye was published, the Sun-Times views the Trib's decision to give away Red Eye papers as a vindication of their strategy to prevent the Trib from establishing, in Sun-Times editor in chief John Barron's words, "a successful paid-circulation tabloid."