I mean, those viruses that spread themselves by hijacking a user’s collection of email addresses - the ones that tend to have .pif attachments and subjects like ‘Re: Your Message’ - seem to either pretend to come from someone you know, or at least has your email address, or from someone they know, by spoofing email headers. Therefore, by tracking the spoofed email addresses of apparent virus senders, you could end up with a useful set of addresses that could be analysed to find out where you fit into a given social or, more likely, business network.

Hmmn, not sure I explained that too well, but by way of an example, I just found a virus-bearing email in my Spam folder which purported to come from someone I’ve met, but didn’t - until now - have an email address for. So, now I can email the person in question, thanks to the virus. And, if some application was tracking these virus spam emails, I could build an address book of contacts and contacts of contacts, effortlessly. Which would be a good thing, if it weren’t for the fact that the people at two degrees of separation and above have never given me permission to find out their email address.

Anyway, if this does make any sense, and I haven’t made false assumptions about the way these viruses do their thing, it’d be nice if something useful could be made out of the malicious practices of virus-writers.