A couple, yes.

Despite what you learned in Sunday school, your first best option is to lie. When asked for an e-mail address for no apparent good reason, feel free to enter and smack the Return key. With luck, the Web site will take this as the goods and let you get on with your business.

Regrettably, this technique doesn't work as well as it once did. Increasingly, you're asked to submit an e-mail address and then the asking body sends you a link to whatever you've requested via e-mail. If the address you submit is no good, you don't receive the message, and you can't get the thing you were after.

That doesn't mean, however, that you must offer your primary e-mail address. I've created a couple of free Google and Yahoo addresses for exactly this purpose. When asked for an e-mail address that I know will result in an activation message, I plunk in one of these addresses. I then check that account for the activation e-mail and then ignore the account until I next need it. (Meaning I don't include it in a schedule that automatically checks my e-mail.)