http://www.hackaday.com/2007/11/16/how-to-where-to-find-parts-for-your-projects/
Eactly what it says on the tin!
-> http://www.midibox.org/forum/index.php?topic=9993.0
but thanks for sharing though.
Did you even look at his link? lol
Its an in depth guide about the different places you can order componoents, and where to get free samples.
A parts search engine will not give you advice on each distributor!