I'd use one of the many search engine APIs available (BOSS, Bing, etc) to a build vertical search engine that enhances the basic results provided to me. Re-inv

I'd use one of the many search engine APIs available (BOSS, Bing, etc) to a build vertical search engine that enhances the basic results provided to me. Re-inventing crawling, relevance clustering, etc isn't worth the trouble or the cost. Finding ways to enhance a specific market segment however would be a differentiater worth pursuing. disclaimer: I work for Y!