Banned from what? If all review loans are forgiven / forgotten about then it is actually a gift not a loan (you are the one stipulating it a loan, other reviewers say it was gifted). So, you do the review on the basis that you will sell their gift when you deem you are finished with it - at some point it will become irrelevant to most enthusiasts or someone else who still has it will help them. Keep it simple. Keep doing the reviews & raise a bit of cash for charity. Who is going to ban that? And, if they do maybe they are the wrong people to work with?
Not the companies - the site:
The rules are very clear: -
Selling or trading free review samples is strictly forbidden.
Review samples and accommodation purchased items.
7. Items received for free for reviews posted on Head-Fi CANNOT be sold or traded ANYWHERE, period.
8. Accommodation purchases, that is, items sent for review on Head-Fi but then sold afterwards to the reviewer at an "accommodation price" CANNOT be sold at a higher price than was paid for the item.
Doing either is highly unethical and a serious abuse of your membership here and, not to mention, a serious abuse of the manufacturers. Not to mention, no member that does not have an official review tag and/or is formally listed as a reviewer can call themselves as such here. Using the classifieds or Head-Fi to make a profit comes under the same rules those for Members of the Trade and abuse is considered to be "flipping for profit" or shilling, depending on circumstances (eg: Telling a manufacturer you'll post a positive review if you can get the item for free or at a discount). Members found to be using the classifieds and/or review system to profit from review items, even if the items were sold or traded elsewhere, may have ALL their reviews deleted, access to the classifieds removed and/or will be banned.
9. Items received for free from a manufacturer can be given away.
That last one might be a good one though - I'd have to talk to the manufacturers about it, as ultimately they might want the gear returned. Like I said earlier - I don't consider that i own it - they do.