Section K.3. is very problematic - it is (essentially) the same as the previous TOS. It states that github can restrict/delete your account for any reason, at any time, without warning. This may be fine for trivial projects, but if you're running a business and relying on github for actual revenue, this is completely unacceptable. I have asked people about this, and their answer has essentially been, Cross our fingers and pray it doesn't become a problem. I won't use github for anything remotely serious until this substantially changes.