When something of value to this community I dare to say yes.

For instance http://media.tumblr.com/tumblr_lsmw5vkyxT1qba239.png

But most of them link to essentially the same thing, not different perspectives on the same event. It just fragments the discussion.

Yep you're right. In this case we should mainly ignore other sources than those picked by Snowden himself. At least for the sake of keeping the discussions concentrated under trusted posts.