Since a while I am active on GuruShots.com. There are always different challenges where you are in competition with other photographers. There are all kinds of topics. At the moment, among other things, I participate in the subject of Minimalism. I share here the photos I have sent.
About GuruShots.com, I say one thing: Think before you start. It is expensive. I am so stubborn now that I want to become a Guru. But I advise nobody to start with it. It does not really bring you much, maybeinspiration. Nothing more.