I don’t honestly know what it is.
However, I can tell you this:
1. The site has NEVER ranked anywhere near this high in its 3.5 year history for that keyphrase. Mostly, it’s not been ranked at all LOL.
2. I did NOT do any optimization in the past few months that I can recall, and besides we get spidered daily. Also, I didn’t do any significant SEO-type optimization. There are a lot of things that need fixing.
3. I will be able to tell a bit more when my newer site gets crawled/updated… because I worked hard on optimizing that site. So either I should see a further rise… or a fall – now just waiting for the dice to be rolled.
But right now if things continue in the direction they are going, I can only be happy 