Complex sentence: The website is run by a team of about fifteen unpaid volunteers; one of the co-founders was Gregory Kohs, who had previously founded the Wikipedia editing service MyWikiBiz, and who was banned from Wikipedia for running a pay-per-edit scheme.
Split into simpler sentences: The website is run by a team of about fifteen unpaid volunteers. One of the co-founders was Gregory Kohs, who had previously founded the Wikipedia editing service MyWikiBiz, and who was banned from Wikipedia for running a pay-per-edit scheme.