Well, IMO, it cannot be seen as plagiarism if it was the same user who posted on Bitcoin Talk who still started the same topic on this forum. although I think it will be wise if the user can add the link to their first topic from the other forum. On this forum, I have actually created a topic that was already created by me on Bitcointalk, but I added the link to the first post on BTT, and I have also created on BTT the same post that was first created by me on this forum, but I had to also add the link to that same post from here.