What is Binary Option?
A binary option is a financial option in which the payoff is either some fixed monetary amount or nothing at all. The two main types of binary options are the cash-or-nothing binary option and the asset-or-nothing binary option. The cash-or-nothing binary option pays some fixed amount of cash if the option expires in-the-money while the asset-or-nothing pays the value of the underlying security. They are also called all-or-nothing options, digital options (more common in forex/interest rate markets), and fixed return options (FROs) (on the American Stock Exchange).
Pros':
An advantage of trading binary options is speedy returns. You can make one trade per day and make 75-90% profit if you choose. You could even trade faster expiry times and most people trade 15, 30 minute or hourly options. If you are really feeling the need for fast returns, you can even trade one minute options.
Pros':
Binary options are often considered a form of gambling rather than investment because of their negative cumulative payout (the brokers have an edge over the investor) and because they are advertised as requiring little or no knowledge of the markets. Gordon Pape, writing in Forbes.com in 2010, called binary options websites "gambling sites, pure and simple," and said "this sort of thing can quickly become addictive... no one, no matter how knowledgeable, can consistently predict what a stock or commodity will do within a short time frame."