This is a very common tactic in the grey-market internet realm. A dishonest proprietor raises "concerns" about the other's business on an open community forum,

This is a very common tactic in the grey-market internet realm. A dishonest proprietor raises "concerns" about the other's business on an open community forum, creates FUD. Then the other comes on with a new account, and accuses the accuser of xyz. Whoever has a better standing in the community usually wins out. It's brilliant because it works. It also only works in a market that is shielded from making informed decisions about the service/product/behind-the-scenes shit because the information isn't easily accessible or understood. Given that this is a business that isn't hiding in the shadows, it will be interesting to see how this plays out. edit: I should add, it works because eventually it becomes a contest of personalities and the argument drifts away from what started it into some other territory. The FUD is never resolved so it winds up being True to the market. It's also scary because of the amount of forged information, like official documents, lab reports, inventories, invoices, messages etc are forged by the hands of the dishonest proprietor. Honestly, if it isn't resolved file a civil suit for libel. The internet will not resolve this and will make it worse.