What is the purpose of the change user function located beside the username (when composing a forum post)?

maybe if you have two accounts in this board you can easily do that. but it is not permitted on this community.

Ah, I see, thanks for your reply.

By the way, I just noticed that this board is using MyBB. I haven't heard of this company before. Is it new?

no, myBB is already there for sometime now, dont know the exact date though