Demand Generation Direct Marketing Reachforce Search Engine Marketing 
NuSpark Consulting
APRIL 13, 2012
SRDS probably fits in the first paragraph as well, but still is the best source for researching consumer and b2b media information, covering print, digital, and direct marketing/list research. Funnel Entrance: Targeting audiences who are exploring solutions. Digital Audience Research. It’s that simple.
Online Marketing Institute
JULY 31, 2009
There are at least 4 amorphous groups of solution providers also setting their sights on this space: 1) Lead generation services or tools – Because this category contains both service providers (that look more like agencies or telesales outsourcers) and software as a service vendors, there are probably more than I could possibly name.
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