'Tis the season for ecommerce sites to salivate over the visions of sugarplums and higher volume sales dancing in their heads. And in terms of organic rankings, if you haven't prepared your site (or your client's site) to be in optimal rankings in time for the holiday rush, it's too late at this point.
But all hope's not lost--seasonal searches don't only spike during the holiday shopping season. And knowing when searches (that are relevant to your site) see a jump in volume can be key in getting your site in front of the right people at the right time.