Factorio Forums

Is there a specific Forum, where players can exchange your factories with other players?

No, but here is quite o.k.

I think the Show your Creations subforum is a better place for that.

Indeed

Oh, and please change the title of the thread. There's a small mistake in regards to "Factorio" instead of "factory".

(If someone wants to say "That's intentionally, it's a pun." << Please don't use a thread title for jokes. It should describe what it is in the thread to make it easy for people to search for threads.)