Also the reward points needed to redeem for bonuses has been reduced by 33%!
The lack of announcement on your site is going to alienate some people. The increase in satoshi to claim by casual users is also going to alienate some people, it looks like you're trying to weed out the most casual users. Sure, you're going to retain your loyal users that have been with you for a while, but this is also going to make it harder to fetch and keep referrals, esp when they see that that minimum requirement. When you introduce changes like this and then don't bother to explain why, it looks like you're trying to sneak something by, I daresay that as an operator of a popular website, you knew very well what you were doing when you did NOT announce this change to your user base. Users should not have to chase you down to get details about changes to the site. Something like this should have been explained on the withdraw page. So far my experience with your site has been two handed.... "on the one hand this"... "but on the other hand that". One hand is getting heavier than the other.