Browse - Computer Tips - Why does Slashdot access a file called "ok.txt" on my site?
Date: 2008jun9 Q. Why does Slashdot access a file called "ok.txt" on my site? A. It appears they do this when somebody posts anonymously to see if they are coming from an open proxy. You can make a file called ok.txt (that contains simply "OK") in your webserver's root folder to avoid error messages. More discussion http://ask.slashdot.org/article.pl?sid=05/06/09/1621232