With the ease of getting e-mail addresses from the likes of Yahoo and Hotmail. Having an e-mail verification is not the best idea. If we really want to verify that a handle is legit (and not one thought of spur of the moment to just slam somebody) I would propose a snail mail verification process.

You sign up and provide an e-mail address as well as a mailing address.

None of this information is passed out or sold in any way without the express permission of the person signing up.

The person signing up is allowed to lurk but not post (of course you don't have to sign up to just lurk).

A password is supplied to the person via snail mail and once the person receives this password they are allowed to post and can change things (like the password) in their profile.

The mailing costs would be minimal using postal bulk rate mailing as I am sure the people at FlyerTalk are already using for other mailings.

Just an idea that would discourage quick sign ups with the sole intent to cause problems or to slam people.