CSE creates a topic specific search engine by letting you:
- Restrict to or weight by sites you specify as particularly relevant.
- Tag sites using the 'Google Marker' to add labels to sites, or add sites to your search engine.
- Monetise your search with Adsense.
- Embed your search (and results) on your site with search boxes and Ajax.
- Let others collaborate to create an uber search on a given topic.