Well, it's 0.5 mbtc per day. If no one claims the prize, then it rolls over to the next day. So if no one has claimed the streak for 10 days, then the prize is 0.5 x 10 = 5mbtc.

But, we really need the OP/owner to come on here and give this thread more attention because there are multiple streaks piling up and, as you can see, the OP hasn't come to this thread (or any other) in over 10 days. They were online today, and a few days ago, per the bitcointalk profile, but no posting activity.