B2B online media and events company TechTarget (NSDQ: TTGT) has acquired The Brian Madden Company, a Website and conference provider geared toward IT professionals in the cloud-computing space. Terms of the deal were not disclosed. The buy adds the Chicago-based BriForum to TechTarget’s roster of conferences like The Ajax Experience and the Online ROI Summit. TechTarget’s last acquisition was its $58 million pickup of white paper and lead-generation firm KnowledgeStorm. 

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