How To Register Two Types of Visitors?
Scenario: CP Theme. Customers are those who pay to place ads. Visitors are actually "potential customers" of my paying customers who place ads on my CP Themed site. I would like to register site visitors as subscribers and ad customers as contributors(edit ads). I want to be able to collect email addresses of site visitors and inform them of ads, promotions, ect.
What advice can you give for me to be able to register site visitors and keep them separate from ad customers?