There’s a moderate amount of risk to people on this site trying to use it to transact here, so take all that off the forum. But it’s dramatically lower if you’re just doing what you do and not “facilitating” selling, which you will be threatened with by someone unscrupulous trying to get you to provide information, so it’s best not to know shit or talk up anyone. In the letter of the law, heavily under-clarified within the internet context, that could make a buyer who promotes a seller involved in that conspiracy or aiding and abetting the vendor’s organization. So sharing separately on DM or email or multiple channels a specific email, and heavily recommending and promoting a particular vendor ( beyond mere common reviews, but even that could be additive if you’re here and elsewhere singing praises and sharing specific vendors’ contact info, in theory).
Beyond that, possible transactions end up logged somewhere if on chain and were used in some investigation, but that’s not gonna get any more attention on you than your fingerprints on some cash rolled up in the stash-house seized from some street level trafficking organization.
No need to worry. Need to mind your manners and words here, follow rules, and don’t give information to anyone who asks if it’s not your business.