If you follow this blog you know that I rarely write about metasearch engines. It’s not that I dislike them, there’s just too many of them out there, it would be hard to keep track of them all, and few capture my attention. Plus, even though metasearch engines are federated search applications in their own right — they aggregate search results in real time from a number of sources (which may consist of live or crawled and indexed content) — I mentally place them in a category of their own.

Last December I wrote about Rollyo, a personal search engine that you can customize with a list of URLs to search. While one could argue that Rollyo is not a federated search application (it’s got to be searching crawled and indexed content rather than live sources if it searches arbitrary web-sites) I found it to be innovative enough to warrant a post. Addict-o-matic (hat tip to Web Worker Daily) is another metasearch engine that intrigued me.

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