It is against our rules to share personally identifying information, for starters, so even if you post about illegal activities, nobody can tie that to your real self. If you did post personal info like email, address, name or whatever, just edit your post to remove that part.
As for law enforcement having access to the servers, ip´s and what not, chances are pretty much null. We are lucky our admin is not a normal admin but also an it/security expert, and he takes many steps to make sure that even if the servers were accessed by law enforcement, they still wouldnt break the cryptography. Maybe social engineering or something similar would be one way to get caught if one was unlucky to be a target and was not careful and started exchanging pms or putting some personal info one shouldnt, but that´s one´s own responsibility, has nothing to do with the Nexus itself, and its not hard to take some basic precautions to prevent that.
There is some more info in our
security subforum, where trav has posted in a few of the stickies or other threads about some of the measures he takes to protect us here. In that subforum there are also a lot of tips on how to be safer online in general
Lastly, you gotta consider that law enforcement has priorities, they cannot target every single person in every single forum talking about doing some drug or other. Plus its against the rules here to talk about buying/selling, it´s against the rules to be talking about commercial-scale extractions, etc.. So many things that make it so we are just very very small fish, just simple users, it makes our forum not call attention, as compared to a lot of other forums out there.
Nothing is impossible I guess but I´d think the chances of anybody getting caught strictly from posts they made on the Nexus, if they followed our rules, are very very close to 0.
(Or... all the mods and admin are illuminatis and the interpol are on our payroll, and we sacrifice one nexian a month to the police so we can continue harvesting pineals for our New World Order takeover plan :twisted: )