1. A computer-implemented method for providing electronic advertisements, the method comprising: selecting, by one or more processors of one or more computer systems, at least one category for testing from a set of potential categories, the at least one category for testing being selected based at least in part on a respective rating of a respective connection between the at least one category and a respective set of products or services associated with the at least one category; generating, by the one or more processors, at least one test advertisement for the at least one category for testing, the at least one test advertisement representing a product or a service related to the at least one category for testing, the at least one test advertisement including a navigational element, that when activated, collects information related to performance of the at least one category; receiving, by the one or more processors, a request for an electronic advertisement relating to the at least one category; and providing, by the one or more processors, the at least one test advertisement in response to the request for the electronic advertisement.
1. A computer-implemented method for providing electronic advertisements, the method comprising: selecting, by one or more processors of one or more computer systems, at least one category for testing from a set of potential categories, the at least one category for testing being selected based at least in part on a respective rating of a respective connection between the at least one category and a respective set of products or services associated with the at least one category; generating, by the one or more processors, at least one test advertisement for the at least one category for testing, the at least one test advertisement representing a product or a service related to the at least one category for testing, the at least one test advertisement including a navigational element, that when activated, collects information related to performance of the at least one category; receiving, by the one or more processors, a request for an electronic advertisement relating to the at least one category; and providing, by the one or more processors, the at least one test advertisement in response to the request for the electronic advertisement. 2. The method of claim 1 , further comprising: browsing an online directory of businesses providing products or services, the online directory being organized into categories of businesses; selecting a set of potential categories for testing using test advertisements, the set of potential categories being selected from the categories of businesses of the online directory; selecting the respective set of businesses associated with each potential category; and rating the respective connection between each potential category and the respective set or businesses associated with the potential category.