[markoroots]

Yes sure.
I think is good in both place because by reading the first post they can see a thread that can be interesting and go there immediately or after,
but by reading the thread sure one time you arrive down you have just forget that you have an other thread to read, and also because the similar threads must always stay down the threads, but you can make also another more better thing.
Enable both the similar trade spaces in the mod or let decide the admins if them want use both or not. Or more better if the similar threads are different from the one after the first post and those down the thread. This will be great.

Then another great thing I think is to let appear the mod after the first post, not immediately attached down the text.... is too close.... but down in the postbit, or also
between the first and the second post.