Until he's in the custody of the government and facing trial for his crimes, however certain his guilt may be, these documents mean nothing more than another charge against him. One could reasonably come up with something out of thin air, attribute it to him, blame a government agency, and people would believe it faster than they would believe the truth.
Some people side with Snowden and the foreign countries that aid and abet him. I side with the US, and the institutions, including the necessary NSA, and the efforts to bring the wayward ex-contractor to justice.
That said:
Hindering the NSA does no good when it comes to finding terrorists since it provides a convenient blindspot for them to stand in. Remove the blind spot and you give no place to hide.
(Of course, this goes against standard /. groupthink, and will be sent down the memory hole by virtue of modbombing anything that opposes the One True Snowden Opinion)