What does the internet term "spam" mean?

Lol.. Spam is when something is repeated so many times its annoying.

Spammers are people that constantly spam their own websites on other websites.

Wikipedia:

E-mail spam, also known as junk e-mail, is a subset of spam that involves nearly identical messages sent to numerous recipients by e-mail. A common synonym for spam is unsolicited bulk e-mail (UBE). Definitions of spam usually include the aspects that email is unsolicited and sent in bulk. "UCE" refers specifically to unsolicited commercial e-mail.

a troll is someone who enjoys saying inappropriate things or harassing people over the internet. Someone who goes to youtube and types in "king of the hill" just to say "KING OF THE HILL SUCKS LOL!" is an example of a troll.

Stupid, Pointless Annoying Message

Junk, lots of ads and useless post, just large amounts of annoying things.

useless and obnoxious posts or emails, usuially its like a massive amount of ads, but in this case its some guy being a dick and sending lots of messages

btw y didnt u just google it

Spam is anything that annoys YOU.

Wow.

I mean... WOW.