I have to agree with cosmo that the title is misleading. The story doesn't support the idea that reporters' phones were tapped or that what the government did was illegal. It was unprecedented though.
If it weren't for the fact that the White House has no problem leaking classified info when it's politically expedient, I might be more sympathetic with an effort to unmask leakers. But even then, I'm not sure a broad sweep of phone records is justified, even if it turns out to be legal.
"Well, it is one thing for Bill Clinton to say, I feel your pain. It is another thing for Barack Obama to say I feel your pain that I have caused." - George Will