ReadWriteWeb

In April, social media startup Kosmix was acquired for $300 million by retailing giant Walmart. Kosmix had built a Semantic Web platform called the Social Genome, which organized social media data. The platform powered 3 products: TweetBeat, a real-time social media filter for live events; Kosmix.com, a topic-based search engine; and RightHealth, a health search portal. The URLs for TweetBeat and Kosmix now re-direct to a new site called @WalmartLabs.

The tagline of @WalmartLabs is "Social + Mobile + Retail" and it's an indicator of where Walmart wants to go with the technology it acquired. Walmart wants to tap into social data - for example from Twitter - and entice mobile phone toting customers to its stores. Walmart also wants to beef up its online operations, traditionally a laggard compared to Amazon.com.

Editor's Note: This list was contributed by Charles Knight, editor of AltSearchEngines, a former RWW network blog.

In terms of user experience, the gap between the major search engines and their alternatives continues to widen -- a lot. Google has been compared to a luxury liner that turns around very, very slowly, whereas the startups are speedboats that can turn (or innovate) on a dime. I guarantee that if you try any of these top 10 alternative search engines of 2008, you won't come away saying, "Hey, that was just like Google."