I know there's a way to change your wireless user name and password. I just don't know what that way is (yes, I know: google it), and so ever since we moved into our new place, whenever a guest comes over and needs to get onto our Internet, my system is to root through our junk drawer in search of the tiny piece of cardboard that the installation guy used to write down the user name and password for me, hand it to my guest, and hope that I remember to take it back and that it does not end up getting thrown out (which would make sense, because it looks like garbage).
Obviously this system is not ideal.
I've been meaning to do something a little less likely to result in a massive fight between myself and my husband (seriously, I'm going to guess that forgotten iTunes passwords and such have surpassed money as the number one reason for divorce in our country), but haven't gotten around to it. And then the other day a colleague came over to my place for a meeting and needed to access les interwebs, and in order to allow her to do that I had to first locate that minuscule piece of cardboard with twenty thousand numbers written on it in Boy Handwriting (a.k.a. Terrible Handwriting), help her figure out which were "1"s and which were lowercase "l"s, and then, after she left, try to re-locate the piece of cardboard so that it could be re-filed in our very secure and organized junk drawer (that is a joke; our junk drawer is a black hole into which objects like sip cup lids and passports routinely disappear).