"Do not steal other people's trade threads."
also
"Do not spam any trade threads, including vouches and free bumps."
(source:
https://forums.d2jsp.org/info.php?p=6 )
My recommendation is to ignore spammers.
However, I am pretty sure anyone can make an offer in your trade topic, as this is a trade website.
You are free to ignore their offers tho

edit:
as the trading rules help say:
"Do not respond to spam in your thread. Report it."
This post was edited by dfgdsa on Dec 10 2021 03:10pm