Ok I think I have it. If your sites fit into this scenario you were probably hit. 1. EMD 2. Title same as EMD 3. Meta Keywords same as EMD 4. H1/H2/H3 same as EMD 5. EMD in the url like so /exact-match-keyprase.php 6. Your EMD keyword had a decent amount of searches per month. Very low amount of searches EMDs were devalued but not totally beaten to nothing. If the searches were a decent amount then you took a huge hit. The site was probably completely barred from google more or less. A few of my completely BS sites did not fit the above and did not take a hit. All of the rest of my sites fit into the above and took a big big big hit with the exception of those fitting into number 6. Very low searches EMDs did not take a complete hit. Can anyone confirm similiar results?