Approximately 20% of my SEO Services keywords are dropping from rock solid #1 positions down to #2, #3, and sometimes as low as #4. What I don't get is that I've never been in a Google dance with my competitors ever before for these keywords. Web design, sure. But not SEO. I'm worried because these are some of my most valuable keywords. Not because of traffic, but because of the high lifetime value of a client and the extremely high conversion rate of almost 100% per lead. I could really use some help with this because I appear to be Penguin 2.1 compliant and I was always ranked #1 through every panda and penguin and hummingbird improvement throughout the past.
Does anyone have any advice on how I could improve my rankings to #1 once again?