Well. . .('den mother' comment aside

). . . in fact. . . we don't generally allow multiple user names.
It's been our experience that multiple accounts often means the member is a spammer or acting as a sock puppet. When we notice this behavior, we can do some research and will ban/delete without warning multiple accounts that seem to have been set up purely for spam or to artificially bump Bazaar threads. The author whose threads are getting the bumps will be warned as well and possibly given a temp ban if we receive no response.
That said, we do recognize that authors sometimes have more than one pen name that they may write under. When authors have notified us, in advance, that they have an alter ego and they'd like to promote different books under that name, we've allowed it, with a couple of restrictions:
One: you must notify us of any alter egos/pen names you plan to use.
Second: you are not allowed to post in This Name's thread using Other Name's account. Nor vice versa. Additionally, neither may mention the other's books as recommendations in the Corner or elsewhere on the board.
In other words, you may have two separate personae, but we'll treat you as one person for purposes of promotion and bumping. In order to not risk being banned, you need to let us know if this is the case. PM's are fine. . . .we don't announce it to the world, just keep a list for the moderators so we can keep an eye on you and keep it fair for everyone.