This feature is especially suited for eCommerce sites, in which it can be used for two distinct use cases:
Site promotion of a house brand (i.e., globally boost a dimension value over all pages). For example, a site may have a private label that they would like to ensure always shows up as a refinement everywhere on the site for business reasons.
Landing page promotion of a single dimension value or refinement that is important to that category. Assume, for example, a site that sells CDs. Willie Nelson has produced many records, some of which are categorized as both country and rock. The site wants to promote (boost) Willie Nelson in the Country category rather than in the Rock category.
Immediate consumers of this feature are sites using Oracle Commerce Workbench. Using Workbench, a merchandiser defines a set of rules to fire and to boost or bury individual dimension values based on an end user's navigation state.