Tapir asked for some statistics about the search position feature. Here is a breakdown by month, since the start. The average is about 120 searches per day:

Month      #searches
Apr/2009   1735
May/2009   3713
Jun/2009   4538
Jul/2009   3085
Aug/2009   3339
Sep/2009   2941
Oct/2009   2758
Nov/2009   3617
Dec/2009   3786
Jan/2010   3465
Feb/2010   3477
Mar/2010   3751
Apr/2010   3855
May/2010   4683
Jun/2010   3679
Jul/2010   3219
Aug/2010   3861
Sep/2010   3701
Oct/2010   3117

The most common searches are from diagrams on Beginner Exercise 1 (574 times,) Ear Reddening Game (524x,) Beginner Study Section (473x,) Positional Judgement Problem 1 (303x,) Corner shapes (233x) and Rules of Go - introductory (209x). The most common search is for an empty corner pattern on a 19x19 board (704 times.) :o)