OurBigBook is quite similar to the now defunct Knol, a Google project that basically made a Wiki where each person can have their own version of each article.
Knol ran from 2008 until its shutdown in 2012, and failed to attract enough attention that Google would keep it running.
It is our belief however that the website had great promise and potential value, and simply would generate profits too small to compare with other Google projects.
Knol also lacks a mechanism to store your notes locally, which we believe is essential if you want to get people to use as a system for people to dump large chunks into.