Our site got hit by hummingbird hard. We were #1 for [Tampa Web Design] and did pretty well for it for the late part and early part of this year, then April's update came out and put us on page 94. We worked hard, got back to #8. Then all of a sudden out of nowhere, around the time Google announced Hummingbird(I know it was realeased earlier) we dropped completely off the search results altogether. I have no idea what happened. Site is fast, W3c Compliant and content heavy.