It is better not to post it on the forum.
According to my experience we have a lot of members of our forum who are book writers or book resellers. If somebody post some ebook without author's permission so I am getting as aggressive message from the author/re-seller/affiliator so I even can not post/show this message to anywhere.

If somebody is posting the message "what do you think about this ebook" and many people are discussing so it is as promosion for authors/resellers/affiliates. That's ok and no problem. Authors/re-sellers/affiliators are seeing it and not re-acting. But if somebody posted the link to download ebook for free, or post ebook so authors/re-sellers/affiliates are not asking me to delete it. They are not collaborating sorry. Not discussing, not contacting. They are starting to send their very aggressive messages immediately to everywhere and sometimes their messages are too aggressive and with real menaces.

It is better not to post any ebook on the forum untill authors/re-sellers/affiliaters will find some way for free (or not for free, or any) collaboration with the forum (with members of this forum).