fxb
Yep. If you reply to the spam to unsubscribe, often all you are doing is actually confirming to the spammers that your email address is valid, & you'll just get more.
For more about spam, have a read through these threads:
http://www.cableforum.co.uk/board/sh...ad.php?t=10877
http://www.cableforum.co.uk/board/sh...ad.php?t=11818
http://www.cableforum.co.uk/board/sh...ad.php?t=12514
edit: another -
http://www.cableforum.co.uk/board/sh...ad.php?t=10821