Yahoo made a strong competitive move against personal search startups like Eurekster and Rollyo today with the announcement of Yahoo Search Builder, a customizable search engine tool.

A custom search engine can be created that searches just a few defined sites, and/or the entire Yahoo search index and Yahoo News. The search engine can be further tailored to include a specific search term along with whatever the user types in, exclude certain keywords, etc. Once completed, the search engine can be integrated directly into a website via a code snippet.

Source: techcrunch