http://i2podisy.i2p/about.html
Example 1 : User A, let's call him Alan, likes pictures of girls bending over showing off their asses. Alan could subscribe to a gallery about this very topic. Alan can use his points to download, let's say, 10 pictures from this "ass" gallery, per day. So Alan logs in, hit's the button for the "ass" gallery, gets his pics, and then logs out again.