http://duckduckgo.com/ simple search engine with clean interface, great for certain purposes
http://www.tineye.com/ "You can submit an image to TinEye to find out where it came from, how it is being used, if modified versions of the image exist, or to find higher resolution versions. TinEye is the first image search engine on the web to use image identification technology rather than keywords, metadata or watermarks."
http://www.piracetam.net/ sourcing nootropics and smart drugs at competitive prices
http://www.lookchem.com/ sourcing chems
http://www.ec21.com/ global b2b marketplace
http://www.security-forums.com/index.php
http://skreemr.com/ great mp3 search engine
http://news.ycombinator.com/newest hackernews