Google hacks...
Bought a funny and useful book this afternoon: Google hacks from O'Reilly. 100 tips and tricks about how to do amazing things with Google... A real programmers book. Can be very useful for providing advanced search functionality in your (web) applications. Have a look at Amazon: http://www.amazon.com/exec/obidos/tg/detail/-/0596004478/qid=1050181607/sr=8-1/ref=sr_8_1/104-6529266-1343112?v=glance&s=books&n=507846