I'm not sure if there's another industry out there that requires the sheer amount of access-based content that the IT industry does. What I mean by access-based content is information that requires a a login, signup or tithe (in the form of your e-mail address) for entrance to, or downloads of, eBooks, white-papers, files, blogs, forums, webcasts, trial applications, etc.
Many of the sites that require some sort of access, I will never visit again. So why give access to any of my mailboxes for a possible endless stream of unread mail? And why chance winding up on a spam list or having my address sold to "industry partners"?
This is where Jetable comes in. You can create a disposal e-mail address that will expire in one hour to one month, your choice. Jetable's service creates a time-limited e-mail forward to a real address. Just put in your real e-mail address, choose a Life Span based on how long you need (I usually choose one day) and click Create...
They support ten languages and have a Firefox plug-in (if you're into that sort of thing). Oh yeah, it's free!