First, understand that Snowden was careful not to include names or anything that could cause a legitimate threat to America (except the backlash for spying on allies and citizens). Leaks like this are the only way the government is in any way being held accountable at this point. Metadata collection by the government is something that should have been open for public debate. Honestly, the fact that whistleblowers are necessary is dangerous because an individuals shouldn't get to decide what confidential information the public needs. However, until the government is more trustworthy and transparent, I am for whistleblowers.