how to make a flashing led that lights when someone goes on your website.? Answered

 this might help www.instructables.com/id/Arduino-XMAS-hitcounter/

 ok quick version. I don't have currently arduino here so...
1. google: users online script (or something like that)
2. make script on website - for example www.server.com/online.php that just echo 0 or 1 
3. if you have ETH shield for arduino connect to site and read number

that's it