A static Ip is static - its always yours - your internet phone number if you like, a dynamic Ip is changed when you log on and is set by your ISP. If networking you need a static Ip. ISPs like AOL use dynamic Ips because they have a set number of addresses they can use and assign each user a new one as they need it, then when logged off it goes back into the "pool" to be used again when someone else logs on. Just because an Ip is dynamic does not mean its anonymous...