5. The computer-implemented method of claim 4 wherein each of the one or more media properties is a Web document.
4. A computer-implemented method comprising: a) accepting, by a computer system having at least one computer in a network, one or more keywords input by an advertising user; b) determining, by the computer system, a set of one or more taxonomy categories using at least one of the one or more keywords; c) determining, by the computer system, a set of one or more media properties using at least one of the determined one or more taxonomy categories; d) presenting, by the computer system, at least one of the set of one or more determined media properties to an advertising user as an ad targeting suggestion; e) accepting by the computer system, an advertiser selection of a suggested media property; and f) targeting, by the computer system, the serving of an ad of the advertiser with the selected suggested media property.