http://www.bitlanders.com/blogs/bitlanders-rewards/3456074

900 Bitmiles is a long distance to travel if you have to keep track of which ones you've pressed and which ones you haven't .  You miss half of them, and you keep wasting your time going after ones you have already finished collecting.  One you need is one big place to collect them all at once.  This way you can collect the Bitmiles 900 in five minutes flat.