A boost against its stop rule and, with several posts, against each other: each post's click rate, cost per click, and the visits and signups its tagged link brought; the verdict (not launched, needs numbers, too early, stop, winner, no clear winner, working). A winner is called only at a 90% chance of being the best, once each post has 1,500 impressions. Signups are reported, not compared, under 5. Without id, the latest boost. Free.