I have done this and am seeing several other instances of a member posting a reply not thinking about being logged in or not. The problem is that when you hit save it's in there as anonymous without any warning or chance to log in before it posts the message.
Understanding limitations and all that, is there some way you can still allow anon postings but give us a chance to log in first if we forget?
The site is solid and getting better all the time! Love the map!