I am seeing A LOT of sales posts which are not getting approved because the seller is not listing their ISP email address with their post. This means that gmail, hotmail, yahoo mail, etc. is not valid. Anything you can signup to get for free is not valid, period. Listing your ISP EMAIL is the a
main requirement along with listing a price (no bidding).
If you are worried about listing your email address because web crawling email bots may pick it up for spamming, there is a solution for you! You can use the
Mail Hide script from the
reCATPCHA project. You will be able to
protect your email address while helping to digitize books.
Go here to get the script to protect your email address in your listing for approval!