Back in the early days of the internet, when Usenet ruled, there would be a huge increase in noise on the forums each September, due to the influx of newbies at the universities in the northern hemisphere. These newbies would eventually learn to behave, and things would settle down.
September 1993 was the September that never ended. Noise went up  and never returned to normal. As a result, Usenet is effectively dead .
Well, from where I’m sitting, September 2010 is another milestone. It seems that spam antimeasures are eating my emails, and there’s nothing I can do about it.
For example, my ISP decided to change the DNS (MX) records they had access to, to insert their mail server between my server and the Real World. I had them stop that, silly boys. I’d rather have spam than lose email.
But still, email gets sent, email does not make it to my SMTP port. Someone somewhere is filtering, and using DROP not BOUNCE .
And who do we have to thank? The fscking spammers.
 Many if not all blamed AOL.
 Well, there’s Google Groups, but it’s not the same.
 Maybe. Because so much crap gets sent with fake From: addresses, people have learned to ignore bounces. So maybe their mail is bouncing. Nobody knows.