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.
ps
PS is a two-letter abbreviation. PS in letters stans for post scriptum, or postscript.
Trivia about ps
The expression about minding these & Qs may have originated with printers or pub owners
...And one more thing--you tack it on to the end of a letter to tack on an extra thought