Whoever said that there's strength in numbers failed to note that there's also the prospect of embarrassment in a crowd. In April of 2011, wealthy and notorious businessman Donald Trump was rumored to be considering a run for the U.S. presidency. In an apparent attempt to weaken the political standing of President Barack Obama, Trump publicly declared that he had secret information showing Obama was not born in the U.S. -- a claim that, if true, would make Obama ineligible to continue holding the office [source: McMorris-Santoro]. When the White House countered by releasing copies of the president's original birth certificate, Trump became the focus of derision and his aspirations for higher office soon fell apart.
If you're concerned that revealing your secret in private could lead to violence or, at the very least, a heated argument, then choosing a public location -- say a coffee shop -- to disclose the information has its upsides. If you openly reveal the secret to a large group of people, you may get the support of the vast number of those people and, as a result, be able to handle the fallout from the rest. Weigh the pros and cons of a public or private setting -- it can make a decided difference in the outcome.