How Does SPAM Work?

I’ll never understand.

Sometimes I get the weirdest junk mail. Sure, I get junk about Rolex watches, Cialis and Viagra, but sometimes crap comes in that clearly doesn’t offer any kind of service or product. For instance, I got this in my Junk folder a while ago:

   It is well that I have found you! said the man striding forward.
You are needed and we have looked for you long. You would have been
numbered among the dead, who are many, if Gandalf the wizard had not
said that your voice was last heard in this place. I have been sent to
look here for the last time. Are you much hurt?
   A nasty knock on the head, I think, said Bilbo. But I have a helm 

All it consists of is text from a book. Lord of the Rings apparently.

There’s also this one:

visible against the bright sky. Arthur sat down, shoulder deep in the slime.
   And  now comes Roadside Picnic. . . . In  the  so-called Golden Age  of
tomorrow you're in jail. But I don't care, I'm ready  for anything. I can do
make me a god. O.K., Fletch? I'm a seagull. I like to fly, maybe..."

...Jonathan Living Seagull? I don't know.

If you're a SPAMMER and you send this stuff out, what's your point? What action do you want me to take? Are you just testing mail servers?