Will Wikipedia really notice if I try to sneak in a promotional article or edit?

Yes. On April 5, 2015, Wikipedia founder Jimmy Wales told 60 Minutes there are more than 100,000 core volunteer Wikipedia editors. Sue Gardner, executive director of Wikipedia, 2007-2014, explained how they work: “There are folks… that vandalize the encyclopedia. They insert false information, they insert bias. But the core Wikipedia community, the people doing most of the work, consider themselves to be defenders against wrong, unhelpful, outside influence… Editors patrol articles. They patrol what we called “recent edits”, They are monitoring edits that are coming in. And they flag ones that they think are a little suspect or aren’t properly supported. Most vandalism is fairly obvious.”