Does anyone with a site that typically sees seasonal variation, whether its a certain topic you discuss, or something you sell, also see a seasonal variation in rankings? For example, we're e-comm, so as we approach the holiday season, our visits are going up, but so are our rankings, which dropped during the traditionally quiet part of the year with fewer visits. It's been this way for the past several years.
We often think of rankings as something that changes due to improvements or declines in content quality or link building, but at least for us it seems as if there's a seasonal component to which direction they go.
Has anybody else experienced this?