Greetings from Uninterested Person

I love the unsubscribe letter. Hehehe. Really, there are lots of spammer. I have plenty of that in one of my emails that is why I refrain from using it.<p>Unsubscribing to an spam email will not help to stop them sending to your inbox. Once we unsubscribe, the spammers will know that our email is active and the more they will send you mass marketing ads or spam.

This really does beg the question, does any of this spam actually work? Maybe we think it doesn't because of some hacker bias and our knowledge of the web but maybe normal people actually buy what they're selling. I find it hard to believe but it's possible. Are there any stats on this or anyone with experience?