Reddit has been pretty un-fucked-around-with by Conde Nast's parent company since its acquisition. (It's been split off from CN as a separate business entity, but even during CN's stewardship, the messing around was very minimal).

It's debatable exactly how much money Reddit makes, and whether it could be considered "in the black." But it's a success story in as much as the site's userbase and traffic have grown, and the core service has not been tampered with.

Youtube