Tips and templates for making residual income online by displaying advertisements on your own site.

Resource allowing Webmasters to run live comparisons of keyword bid prices at multiple pay-per-click search engines.

Listing of pay per click search engines. Offers reviews, special PPC promotions, and general reference on the PPC industry.

Provides tips, news, and information on AdSense and other contextual advertising programs available from PPC service providers. Free syndication by XML/RDF.

Reviews of pay per click search engines.

Reviews the best and worst pay per click search engines on the Web. Includes web promotion tips.

Compare pay per click search engines and other useful PPC tools. Browse information on various pay per click search engines, resources and tools.

Aims to review all sites that charge money for listing or ranking a site.

Free pay per click search engine reviews, news and helpful advice.

Listing of hundreds of pay per click search engines, reviews of bid management tools, scripts, and sites.

Offers scripts to help make websites more interactive. Offers Smart Search for building pay-per-click search engines, as well as other products for web promotion.

Reviews a few engines and examines how their syndicated partners display results.