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.
America's 50 top givers in 2014 donated $9.8 billion to charity, up 27.5 percent from the top 50 gifts in 2013, according to a new report. Bill Gates was the top giver last year, according to the Philanthropy 50, assembled by the Chronicle of Philanthropy.