List of all companies, with links, that provide offers/campaigns for
online lead generation through coregistration.  Please, only
advertising networks that have multiple campaigns in multiple
product/service categories.  These campaigns are based on a
CostPerLead and/or CostPerAction/Acquisition basis (CPL and CPA,
respectively).  US and International are acceptable.

Questions that ask for "all" of something may go unanswered. You are
likely to do better by asking for a list of a finite size appropriate
to the price you've set on the question.