Every time I see someone with one single post, from the USA, I'm sorely tempted to ban them there and then. Almost always a scammer.
Because we're now a .com when we used to be .co.uk, we get a lot of US scammers. The sodding Berlingo was never sold there so they are highly unlikely to be owners or even potential owners. Normally they post one nonsense reply to a thread, especially older threads, to get at least one post count.
Look out for anyone offering to sell anything and be cautious when responding to personal messages. If they PM you offering something, do not click any links they provide. Ask for a mobile number or an email address. Remember, to buy something from someone you don't know, without meeting up in person, requires sharing YOUR address details and paying for it online, by bank transfer or PayPal. Be VERY careful with this stuff.
If unsure, give me a nod and I'll check them out (or @
brodfather11, my fellow Moderator)