Internet classifieds are just what you think they might be; advertisements categorized by subject.  Often overlooked as a way to advertise your business opportunities.  You will find dozens of these type of sites on the internet, ranging from free to join, a small fee, to fairly expensive.

Here are my top Internet Classifieds:
Free Ad Depot - This marketing tool is really a combination of classified, links, banner, and email advertising all in one site.  You can start out as a free member and earn credits by reading other members emails, if you decide to upgrade to Pro you have a choice of a one time fee, yearly, or monthly plans.  Highly Recommended.
Adland Pro - Similar to Free Ad Depot, Adland Pro offers free classifieds, and a number of other services including banner advertising, search engine submission, text ads, and more.
Free-Ad Depot - Get mass exposure FREE!
Get Linked from thousands of Classifieds for FREE with one click.
OBO Ads - Free to join, More of a classical online classified service.
Best Way Classifieds - Free classifieds: always free ads! 100% guarantee - post your classifieds now and start selling online. Pet, automotive, boating, business, electronics, used cars, aircraft and fitness as well. Huge traffic and thousands of fresh daily visitors
JoeSacco.com - Your source for Internet Marketing Tools and Opportunities