- Google - The web's most used search engine.
They also offer pay-per-click advertising and
revenue programs for websites.
- Bing - The new, up and
coming search engine from Microsoft.
- Searchen - Searchen
is a popular search engine and directory for web, images, video, news
and more. Also offers search engine advertising, domain name search and web hosting services
- Yahoo - Yahoo's huge portal now features a brand-new, world-class search engine.
offers PPC advertising via their Overture division.