David Rodnitzky is CEO of PPC Associates (www.ppcassociates.com), a leading online marketing agency located in San Mateo, CA. You can follow David on Twitter @rodnitzky, or through his company blog: www.ppcassociates.com/blog.
Online lead generation is thriving. There are now publicly traded lead gen companies, like Quinstreet (valued at almost $500M) and BankRate (valued at $2.4B);...