We are tweaking the sort order and "rank" of each name on BrandBucket in order to target better conversions and to increase visitor (buyer) confidence on their first visit. Right now, and this may change as we gather data, the default sort order on the home page lists names in the following order: staff picks sorted by date added (newest to oldest), then the rest of the names sorted by date added. Within the rest/non-staff pick we are optimizing based on different factors in each name.
This is an ongoing process and we are focusing a lot of effort on to make sure that we are converting visitors to buyers. In the near future date added may or may not factor into the default ranking, but we will be adding a "sort by date added" for those people -- frequent visitors and domain owners keeping an eye on things -- who want to see the names ordered that way.
Something to keep in mind is that 95% of sales on BrandBucket happen after the user has performed a search for a specific keyword or phrase revealing targeted relevant names.