Specialized

Antique Owl - Antiques and collectibles search engine and directory.
BridalClicks - Wedding and bridal specific pay-per-click search engine.
Business PPC - Search engine specializing in business and industrial pay-per-click listings.
Canada44 - Offers pay per click advertising for Canadian web sites.
Export Search Engine - A pay-per-click search engine dedicated to global export and import trade and affiliate program.
Find it in Maine - Maine pay per click search engine and directory.
Fitseek.com - Search engine specializes in health and fitness related businesses.
Furnado - Pay per click furniture search engine.
GoGetMLM.com - A pay-per-performance search engine for home-based businesses, multi-level marketing, and the network marketing industry.
HomeschoolSuperSearch.net - Filtered, family-safe search engine for parents, teachers, students and homeschoolers. Pay-per-click and permanent URL submissions are available to website owners.
HydroponicSearch.com - Agriculture, horticulture and aquaculture articles, forums, shopping and search engine.
Lambasting.com - Specializes in listing for discount travel and holiday related links.
ShopSearchEngine.com - PPC shopping search engine, directory and shopping guide.
WebsiteZone.com - Directory offers 135 website-related products and services categories.