Thank you for your comments which I have noticed dotted around various threads. As I don't read threads which don't interest me, I thought it would be useful to try and put all these comments in one place.
I appreciate that you are now able to track addresses and are watching out for multiple users.
I can understand that you want to prevent multiple users making a topic look as if there are more posters than there really are, but sometimes a thread starts out one way and gets off on an interesting tangent which means that although someone may post multiple times with the same name when the discussion is on the same initial subject, as the subject develops and evolves another name may seem appropriate. I would imagine that as long as the posts are thoughtful and pertinent to the way the discussion is going that multiple names would be in order. For example, a discussion that starts off about housing may turn into a discussion about school overcrowding, and someone who is a "neighbor" at the beginning of the discussion may wish to be a "parent" when the discussion turns.
Thank you for your time on this.