A blue moon is a second full moon in a month of the common calendar, something extremely rare.
There are thousands of Wikipedia articles that have only been opened once in the last month. The blue moon generator searches for one of these and makes you the second reader of an article, that has only been read by one other person during the last month. By that, the reader creates a blue moon. He gets in contact with knowledge that is extremely rare, because it is infrequently called up.
Visit bluemoongenerator.com to create your own blue moon.
Together with Tobias Lehr and Leonie Hennicke.