As Forbes pointed out in February, the owners and operators of the biggest online poker firms are an open secret--and many of them can be found regularly playing poker in Las Vegas or promoting their companies at U.S. events shown on television.

FORBES

It is an open secret that hospitals in the 21st Century are full of patients that should not be there.

BBC: Are the patients the problem?

But it is an open secret that Mr Ali Mahdi and Mr Aideed have agreed that the first should be president and the second prime minister.

ECONOMIST: Somalia