Best of 2007: Articles and Blog Posts on SEM
WebMarketCentral
JANUARY 22, 2008
Search engine marketing (SEM) is one of the fastest-growing categories in all of advertising, because it is both measurable and logical: present your ads when people are searching for what you're selling. These numbers can change dramatically from day to day, so manage and adjust them." PPC Outsource or In-House? fade a bit."
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