Note: You may want to ask people who quoted your OP to consider deleting at least the container, that bears your old username. I've deleted my quote in my prior post on this thread.
It is a very good reminder. I see some users still did not edit their posts and OP need to contact them via PMs to finish what you recommended.
Another note for OP is:
- What was changed is display name of OP, not an initial and also fixed username.
- OP can ask for changes of username (in fact it is display name) as many times as possible if theymos accepts it. But if I know the initial username, I can use it to search and search result will direct to the current display name of OP.