well in world of goo, spam is the junk mail from the final level of chapter 4, but when it comes to the internet its a different story.

How about this from Dictionary(dot)com?:

Spam
  /spæm/ Show Spelled [spam] Show IPA noun, verb,spammed, spam·ming.
1.
Trademark. a canned food product consisting esp. of pork formed into a solid block.
–noun
2.
(lowercase) a disruptive, esp. commercial message posted on a computer network or sent as e-mail.
–verb (used with object)
3.
(lowercase) to send spam to.
–verb (used without object)
4.
(lowercase) to send spam.

These commercial messages (not to be confused with the canned meat)can also be virus filled, as well as very annoying web pages that are COMPLETELY doomed with viruses and trash. None have been here in a while, so not much is made to say about them except that they are PURE EVIL! Spammers are recognized by having a different assortment of Languages, and links to stuff we don't want. Keep your eyes peeled for anything suspicious!

Goofans Police Man James-

So that's the meaning of Spam. I just checked the forum of Goofans rules.