Having had several "communications" from "ebay", requesting account details, I got sufficiently fed up to trace the web domains.
From the email header, and also from the domain names in the links, I found the owners of the domain name and forwarded the information to the domain name registrars with a complaint and also to ebay to investigate.
At work I've had ones "from" various banks and credit card companies, but they are spectularly easy to spot as I have never had accounts with the banks they pretend to be from. More worryingly, I could find no way to communicate with the banks to send them copies of the fakes. They obviously really care!
SD