that's very helpfull out there..,also remember be carefull some overlay and js profile out there...just be carefull.,cause they using some page redirection and browser redirection in case...,and also they drop some trojan's and viruses.on your system..,that's the problem of javascript profile just be carefull , i will suggest to use the best anti-virus out there..,like bitdefender or mcafee...or use the maintenance software like deepfreeze , it will erase all the log's,viruses, etc..upon next restarting..,so ur system will be safe and secured...