In 2014, it looks as though it might be happening again. Check out this graph of "memes" seaches:
That's a pretty spectacular 2014 "meme" spike! Looking at the meme news it looks as though it may have something to do with the memes that are hitch-hiking on the world cup. However, memes do seem to be on the rise again - and perhaps it will go on to rival the enormous 2011 meme explosion.