I like the fact that we can see how much coins have gone through the mixer for the day.
I am also looking at the "Earn on the Transactions?" page, and the rewards seem a bit on the higher side for such a short time.
Is this just a promotional offer, or will it continue for as long as the site is running?
Yes it is a promotional offer to celebrate the opening service, and last from 1 week to a month. Percent may change