There is a trick not many people are aware of to use the same email but write it differently. Assume your email is [email protected]. By adding a plus sign (+) after johndoe you can then add continuous text but still go to you. For example:
[email protected]
[email protected]
This is the SAME email address. You will still receive your emails, but the "From:" field will have the additional text. I do this when I sign up for services, to find out if they are selling my email address. This will usually fool web forms into thinking they are two different emails.
The only time this does not work is when some ignorant web site programmer thinks "+" is an illegal character. For the technically-oriented people, this is allowed and legal as per RFC 2822, Internet Message Format.