Anonymity on the net -- JAP/Jondo, Tor and usage tracking

wow very techy stuff you got going here. very interesting at the same time. my friends are always making fun of me because when anyone asks my last name i make a name up. I am very picky about my privacy, so i really like this thread.

I have one question. I did a yahoo search for proxy servers and found a decent one that says it is located in germany. it is called privacy5.com. i have been using this to log onto cannabis.com from my work computer so my boss dont see. i dont understand to much about it other than i go yhis site and tell it what site i want to go to. how private are these sites?