There are several pages on the Web that generate fake e-mail addresses so spammers can harvest them; the purpose is to fight spam. (Some examples of this concept under discussion and, in some cases, in practice.)
For this to work, the spammers have to (a) harvest addresses off of the Web, (b) not 'blacklist' such pages (either on autodetection or on manual detection), and (c) care that their mail gets sent to real addresses. Are all these true? Do these address generators work?
And if so, then how do they work? Is the idea that the spammers will be inundated with returned mail and implode? That they'll have too a low a return (real responses) on their investment (e-mails sent out) and go out of business?