NSA Protest - Algorithm Whiteout

There are few situations where an internet protest may be as effective as a proper street-based protest, but I think this may be one. If the NSA really is reading our email we should be angry. Very angry. But it also gives us a way of fighting back. They must be using some kind of algorithm, searching for keywords and phrases. If we knew what those keywords and phrases were, and in a coordinated way (on mass) started using those words and phrases deliberately and spuriously in every email we sent… well the algorithm becomes useless. NSA Whiteout. Thoughts?