Experts Exchange could still be a dominant force today, but they’re not. They got greedy, they used dark patterns, and everyone got annoyed with them and migrated to a friendlier, more ethical competitor.
— Harry Brignull, “Dark Patterns: inside the interfaces designed to trick you.” August 29, 2013, Verge.com
Too clever by half, Experts Exchange got so aggressive about signup that users wouldn’t abandoned the free content available there.
They aren’t alone. The rule is simple: try hard not to gain users in a way that makes them dislike you. They won’t stick around.