Here is search logs of 650,000 AOL users. It's very interesting to view search history of particular person and analyze his personality. Let's do it together! Read more about AOL search database scandal or view research papers on web searching.
GRADE: an emerging consensus on rating quality of evidence and strength of recommendations -- Guyatt et al. 336 (7650): 924 -- BMJ
The advantages of the GRADE system for rating the quality of evidence and strength of recommendations.