65,535 - that is the limit of unique TCP/IP ports that's currently allowed on most systems (since port number is a 16-bit integer value) If multiple currencies overlap in port numbers, or if future coins use some other mechanism to connect to their peer networks you could always have more, .
In 2007, its founders were ranked as the second most generous philanthropists in America, and Warren Buffett the first. As of May 16, 2013, Bill Gates had donated US$28 billion to the foundation.
In 2011, Dalio signed the Giving Pledge, pioneered by Bill Gates and Warren Buffet, in which billionaires promise to donate at least half of their net worth to philanthropic endeavors. In 2014, Dalio earned $1.2 billion and was worth a total of $15.3 billion. He was the 60th richest person in the world as of 2014.