Blekko Search Engine has just launched today. Blekko offers an interesting way to search the web by using "slashtags." that lets you search a certain amount of interest
and customization in its search through its innovative use of tags called slashtags.
and it removes all the spam results. Slashtags are inclination of websites organized over a particular topic.
This one's very useful because this search engine allows you to jump over all the spam.
Blekko was founded by Rich Skrenta co-founder and former CEO of community site Topix and supported by different big name investors.