Name changes are confusing both in-game and on the forums. I am suggesting that after a forum name change is processed that the players old name be listed under the "information" tab on their profile. That way if their old name is searched, it will lead to their profile and altogether lessen confusion. Let me know what you think.
Cyp added a pluggin that shows old names when you /seen on Mineverse and I think he is adding this on skyblock.net when /seen is fixed, however I haven't heard of it being out here on the forums, sounds good and helpful although confusing to make Support [Edit] This isn't confusing, Kato/Zambia can add this when a name is changed quite simply
This can easily be done Its just a matter of linking a players UUID to their forum account and each time they log onto the server just check whether or not their IGN has changed. If it has then add it to a database which will be accessed by a forum addon to add it to their forum profile. I have something similar on my server but I just linked forum names to their IGN so both names have to match when signing up. So if they changes their IGN, then their forum name will changes automatically.