Health search engine portals, sites powered by vertical engines returning only health-specific content, attempt to deliver relevant content in a world where an online search can spit back thousands of results with varying degrees of relevance to consumers. Will these search engine portals be a thorn in the sides of eBusiness executives at current health content Web sites and existing general search engines? Forrester believes that these powerful engines can deliver content and provide value to plans as content partners, but search engines face an uphill battle in conquering market space in an already crowded — and soon to be more crowded — online health portal market.