When ClickZ asked agencies to pass judgment on contextual search media, it found the ruling to be a bit ambiguous. Contextual search can be useful, but seldom without close management and more selective use for only certain clients. And the media almost never proves as effective as pure search media. Contextual placements - those text ads appearing not relative to a specific search on a search engine, but rather on a site that has content related to the advertising - are most commonly found through Google's Adsense program. While advertisers held great hopes that those placements would increase the supply of targeted text ad media, which had become increasingly scarce (and thereby expensive), contextual ads first disappointed. High expectations set by search media gave way to the realization that contextual placements - much like the media placements done outside of the search and text ad environments - requires a great deal of management and planning to be most effective.