A、Because they send them to the wrong person. B、Because they send them for pleasure. C、Because they can get profits from it. D、B

W: Oh, what a nuisance!
M: Hey, Julia. What’s the matter? You don’t seem very happy.
W: It’s the junk mail. Whenever I check my mail-box, it is inundated with spam. I just emptied my incoming mail yesterday, and now it is crammed with junk mail again.
M: Well, it is surely annoying to be spammed. I’m usually at my computer so I delete them immediately after I see any spam. The other day I was spammed over 30 times within 20 minutes.
W: It seems it is the same case for everyone. We are facing the same problem.
M: That’s right. As e-mail continues to grow, people should find some approaches to prevent spam successfully. Otherwise, the indulging network environment will pose more and more cyber crimes.
W: Yeah, to tell the truth, I really can’t understand why the spammers like to post some links to porn websites, Is there anything good for them to do that?
M: You know it’s the motivation of profit. The most dedicated spammer often makes a great deal of money by engaging in illegal activities, such as the pornography and casinos.
W: Nowadays, both individuals and businesses are under the threat of a tidal wave of spare. It is reported that the experts are now discussing how to ensure the future of e-mail as a viable communication medium.
M: Well, there arc some techniques to filter or score the incoming e-mails, but they need to be improved.
W: I hope we can get rid of the nightmare of e-mail spam with the help of new technologies.