I was really hoping I would never have to bring up anything like this on here, and despite even strong evidence, I think that this needs to be addressed.
I found this link from the main FFXI Forum http://ffxi.allakhazam.com/forum.html?forum=10&mid=1095010010920339472&num=6
Understand that it's translated from babelfish, so it is confusing, but it does seem to be verifying that the "Luck" group are indeed Gil Sellers. Do a window search (usually ctrl + f on pc's and apple + f on mac's), or scroll down about 2/3 to 3/4 down to see Cerberus.
Also, I'm at work, so I have not had a good chance to read much of this yet, maybe someone else can and clarify.
Bismark Server is already touching upon the topic, and you can see theit post here http://ffxi.allakhazam.com/forum.html?forum=35&mid=1094750654697835841&num=41 . I saw this from a few days ago, and have not read it recently.
Breaking down what the japanese site has, I can gather that they say that Luckboy, Luckgirl, Luckmoon & Luckstar are all together as a team of Gil Sellers. Clicking on the link will provide their common reactions when they are confronted, but again, it is extremely broken, and I don't have time to read it more thouroughly at the moment.
Also, if anyone here is fluent at understanding it natively, there is also the original link listed in the first thread. Also note: the images will only show up if you load the site through the native link, since otherwise, babelfish will try to translate the links, making them incorrect.
Rate me up, down, I really don't care. I feel this is something that needs to be addressed. Unfortunately, like said in the Bismark link, the only thing that I see as being effective is to not help the listed in any way whatsoever, which boils down to do not party with them. It's not like we cannot stop buying from them unfortunately. Also contacting Square-Enix may be a possibility, but I don't see them taking any actual action.
Now, if for some reason I am wrong, and I am tainting the names of innocent players, I will of course apologize, but unfortunately, I don't think that is the case.