Some vanity publishers offer to put your book on display at book fairs, like the London Book Fair, the LA Times Festival of Books, and the Miami Book Fair.
Surely the people who organize those events check into the bonafides of the exhibitors, right?
Not so much, according to David Gaughran. He says, "The most prestigious event in the UK publishing calendar, the London Book Fair, welcomes predatory operators with open arms, deliberately positions them opposite author events for extra cash, and then helps to whitewash their reputation – even running misleading interviews and puff pieces on its own website to help them get more leads."
You can read the entire article here, and if you're tempted to take such a deal or know any author who might, please do read it.