Not sure if your site belongs in shopping, recreation or business? The business category description at http://dmoz.org/Business/desc.html includes the following:
"Official web sites for and about corporations and commercial enterprises (including subsidiaries) that manufacture, distribute, market and sell goods and services to other businesses (B2B) and/or consumers (B2C). Note: If the purpose of the site is to serve as a Shopping destination for consumers (or consumers and businesses), the site should be listed in the Shopping branch."
If you cannot find a perfect category match for your Web site, try doing a search in DMOZ for a similar product. Browse through the search results and you''re sure to find a category that''s just right!