Carrie,
Usernames that use the RSD or MS or PD in them can look alike. It can get confusing on who is who.
If your username is that close to someone else, that also gets confusing.
Let me know if you want to change your up a bit. It's not something we do a lot, but in cases like this, it just might be the answer.
( BTW...There is only one of me.

There have been a few others who have joined who made their names just a tad bit different, and that has confused people, so I know where you are coming from.)