I've always been Mateui so I'm afraid I don't have any name change history, but instead of just ending my post with that I do have a question to ask the people who do change names frequently:
Do you get offended if people call you by your original name or one of your earlier login names? For example, I still see bazookatooth as panda, and Dan as UPRC and I feel more comfortable by holding onto their original names and referring to them as such because I associate them with those names, and it's just weird for me to have to "get to know them again" by a different name. However if people do get upset at that I'll try to use the new names - but I am curious as to how everybody feels about this.