Spam statistics

As I mentioned a week ago, one or more spammers are now generating spam with my (work) address as the sender. Since I left work last night, I’ve received 80 messages on my Sun.COM account. Of these 40 are “Undeliverables” of some kind, and 20 are spam (not caught by the corporate filters). The signal to noise ratio is declining rapidly….
I wonder how quickly they will move on to some other address to avoid spam filters. I also wonder if any of my legitimate email is being lost because of filters that have “learned” my address.
On a related topic, I still haven’t done anything to block blogspam on this account. It seems manageable for now: two or three times a week I’ll get a comment notification email for blogspam, and it only takes a couple of clicks to delete it. I wonder if tweaking the comment template would help….