Unlike a university professor editing Wikipedia articles in their area of expertise, paid editing for promotional purposes, or paid advocacy editing as we call it, is extremely problematic. We consider it a “black hat” practice. Paid advocacy editing violates the core principles that have made Wikipedia so valuable for so many people. What is clear to everyone is that all material on Wikipedia needs to adhere to Wikipedia’s editorial policies, including those on neutrality and verifiability. It is also clear that companies that engage in unethical practices on Wikipedia risk seriously damaging their own reputations. In general, companies engaging in self-promotional activities on Wikipedia have come under heavy criticism from the press and the general public, with their actions widely viewed as inconsistent with Wikipedia’s educational mission