- 1st: "identification "with an IP check. If IPs of the originator of the uuregistered posts don't match up or are not traceable for some reason then "no editing" (which still cold mean it is the same user but that can't be helped then for obvious reasons)
- 2nd: one could implement that this IP address of an unregistered user can only edit ONE comment (the most recent submitted by that IP address), not more. If no matching IPs recorded or if someone want to edit more then it is no hardship to also register first.
In my office all users has same external IP and how we would identify them? With security reasons our server doesn't provide any additional information about IPs. So JComments don't know who have posted comment - I or my collegue.