How to get a temporary EMail ID
tekunik.blogspot.com
tekunik.blogspot.com
There are a number of great temporarily mail services out there, each with different features, strengths, and weaknesses, so definitely use which ever one fits your needs best.
10MinuteMail is supposed to be easy to use: zero clicks to get your e-mail address and to see incoming e-mail. Everything is on the front page and refreshed via ajax. You don't have to sign up, or provide any information at all.
It's secure: there's no way for other people to read your e-mail by guessing your username/address.
It's available in 36 languages (so far!). Over 50% of the traffic comes from non-US sources.
I'd suggest just get a domain name and set up a catch-all account that forwards all your mail to a gmail account.
According to Wikipedia, this is called "sub-addressing".