Best protection i have seen is when the paypal name and email are auto printed to each copy of the ebook upon purchase and download! That then discourages people from sharing it publicly.
Lewi
Wait a minute, you're trying to stop people from sharing your book but you post here on BHW? Isn't that an oxymoron? It's like being a member of a nudist colony but trying to stop nudity!
Virtual Vault sucks!I plan on using virtual vault to protect my E-books its 29.95 per month for unlimited use. The price is decent if you plan on making a fair amount of sales and want to keep your E-book protected.
Can read more about it here hxxp ebook-security dot com / index dot html
the only way to attempt to stop sharing is if you have enough trust with people to make the pdf an exe and have a phone home every startup....
at least make it more difficult to share where someone has to crack it...