Strange... Maybe they are trying something bigger, like an exclusive advertisor paying a better income for them. The freebitco.in traffic is one of the best of all faucet sites. They could find better advertisers than those paying less than $1 for CPM.
Let's see what happens, but if you have money there, I suggest to cashout for now, we never know what is really happen.
Or maybe something new and creative is coming, like they can start putting pop up ads more and something or maybe something like ad lock content, where user has to complete a survey or task from listed tasks to unlock the page and hence they can generate higher profits.
