I love how the news is making such a big deal about this. Did they not think these methods are available to anyone who could use Google? Are they some how surprised they hid them in some pron? Amazes me sometimes the way they try to blow these things up, you are dealing with a sophisticated group with clear cut goals.
Are they really making a big deal about it? The article doesn't make a big deal about terrorists using steganography, but rather the quality of intelligence they now have after discovering the documents.