On April 15, 2011, the U.S. Attorney's Office for the Southern District of New York seized and shut down Pokerstars and several of its competitors' sites, alleging that the sites were violating federal bank fraud and money laundering laws.
1) To turn up a common card for everyone's use when insufficient cards are available to complete a stud game. 2) Five cards, one of each suit plus the joker.
In regards to poker hand rankings, a flush is in the fifth position as the best hand, after a royal flush; a straight flush; four of a kind; and full house.