Does Anyone Know Why?

[nwind]

I have been having quite the battle with spambots signing up for bogus accounts by the dozen. They have gone so far as hacking my password (a problem now solved) to remove the human verification options. Most but not all of these accounts list trash for homepages but none of them ever make a post. While I have them under control, I cannot help but wonder why they do it. I can't believe it's fun to be so persisent doing this for years on end, there must be some way to profit from it. Does anyone know how these guys profit from this strange activity? I am very curious about why they do it.