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.
Bill & Melinda Gates Foundation (BMGF), also known as the Gates Foundation, is a private foundation founded by Bill and Melinda Gates. It was launched in 2000 and is said to be the largest private foundation in the US, holding $38 billion in assets .