Technorati

Recently we learnt about Technorati. Technorati is an internet search engine used for tracking blogs. Technorati has currently tracked over 112.8 million weblogs. Its popularity has now put it in competition with various world-known internet search engines across the web, such as Google, Yahoo and IceRocket. Technorati looks at tags that authors have placed on their websites. These tags help categorize search result, with recent results coming first. The searches on Technorati often results in more up-to-date news than google however be cautious of the many results on Technorati for many of them are spam blogs, also known as “splogs”

According to their about page, Technorati currently tracks over 112.8 million blogs. Every time one of those blogs writes something new, they send a ping to Technorati, telling them they've posted something new along with some tags and basic information about the post. Technorati immediately adds that post to every search for any of those tags.