I have been following this discussion and have a few questions.
First I understand if someone has 10+ dupes this is a problem and LEGO can confirm by checking IP addresses. I just want to say you need to be careful with folks you think might have 1 or 2 dupes. These folks could be family members that play on the same computer and use similar account names but actually do have a real person behind the account.
For example "zkingsley" is a relative of mine and we do share a computer sometimes. He does not play quite as much as I do but he has been playing a bit lately (Just got to Rank 5 poor guy...). We occasionally help each other but in general we do not as I play all the time and trade clicks with a single user almost exclusively with small exceptions.
So our user names are similar and our IP addresses will match if searched but we have real people behind the accounts.
Second, I found a user by chance with a similar name "MattKingsley". I have never met this person but the user name is similar so I thought it would be fun to see if we could become MLN buddies.
Again, has the appearance of a possible Dupe but this one would fail the IP test as I have no idea who this person really is.
I guess all I am saying is that large scale obvious duping is a problem and should be reported but smaller stuff we sould be careful with. You don't want LEGO to get tired of a bunch of reports of somebody who may or may not have one or two dupes. Go for the Big fish first, I have seen a lot myself and will start cataloging them, but I would lay off the little fish that are real hard to prove for now as you just don't know.
Just my 2 cents,
ekingsley
Yes. When I am searching for dupes, I don't really pay attention to those with only 2 or 3 usernames that are the same. Unless they are low rank and don't do anything.