1. A method for generating keywords to be used in an online marketing campaign, the method comprising acts of: reviewing at least one taxonomy that specifies at least one business service category and a list of keywords that represent a proposed best practices list of keywords for the at least one business service category for use in a search engine and/or online directory; specifying a listing type for each of a plurality of keywords in the at least one taxonomy in the proposed best practices list of keywords, wherein the plurality of keywords includes a first keyword and a second keyword, wherein the listing type for the first keyword specifies that the first keyword is a search engine keyword to be purchased, wherein the listing type for the second keyword specifies that the second keyword is an online directory category in which to purchase a listing; adapting, using at least one processor, the at least one taxonomy based on a collective performance of online marketing campaigns, wherein the performance of online marketing campaigns for at least one hundred businesses is evaluated in determining whether to adapt the taxonomy, and the adapting includes adding and/or removing at least one keyword from the at least one taxonomy; adopting, using the at least one processor, a first online marketing campaign for a first business that is based, at least in part, on the taxonomy but that employs at least one new keyword for the at least one business service category that is not included in the proposed best practices list; after adopting the first online marketing campaign, evaluating a performance of the at least one new keyword in the first online marketing campaign; and adding the at least one new keyword to the best practices list of keywords for the at least one business service category, when it is determined that the at least one new keyword satisfies at least one performance criterion.
1. A method for generating keywords to be used in an online marketing campaign, the method comprising acts of: reviewing at least one taxonomy that specifies at least one business service category and a list of keywords that represent a proposed best practices list of keywords for the at least one business service category for use in a search engine and/or online directory; specifying a listing type for each of a plurality of keywords in the at least one taxonomy in the proposed best practices list of keywords, wherein the plurality of keywords includes a first keyword and a second keyword, wherein the listing type for the first keyword specifies that the first keyword is a search engine keyword to be purchased, wherein the listing type for the second keyword specifies that the second keyword is an online directory category in which to purchase a listing; adapting, using at least one processor, the at least one taxonomy based on a collective performance of online marketing campaigns, wherein the performance of online marketing campaigns for at least one hundred businesses is evaluated in determining whether to adapt the taxonomy, and the adapting includes adding and/or removing at least one keyword from the at least one taxonomy; adopting, using the at least one processor, a first online marketing campaign for a first business that is based, at least in part, on the taxonomy but that employs at least one new keyword for the at least one business service category that is not included in the proposed best practices list; after adopting the first online marketing campaign, evaluating a performance of the at least one new keyword in the first online marketing campaign; and adding the at least one new keyword to the best practices list of keywords for the at least one business service category, when it is determined that the at least one new keyword satisfies at least one performance criterion. 3. The method of claim 1 , wherein the taxonomy is globally managed for a plurality of online marketing campaigns for a plurality of distinct businesses.