Claudette Walker says to protect your eBook rights.
On Amazon and Pubit you have a one-time choice when you launch an eBook to select "Manage My Rights." I chose it. What this means, as far I can tell, is that no other eBook publisher/pirate can copy from their eBook format and resell or give away your eBook. So far we have been safe. Only those two locations have my eBooks – Nook & Kindle.
Claudette blogs at http://abacusbooks.blogspot.com/