So, imagine that you enter a forum or chat to discuss a topic, and instead of meaningful discussions, there are a bunch of messages that mean nothing. This is what spam is. What is spam? It's when people write a lot of messages that are not useful and often distract from the main topic of conversation. For example, if in a discussion about a new movie suddenly people start posting memes about cats, that's already spam.
The word spam means not only "a stream of unnecessary information" but also "cluttering" the space where the discussion takes place. Sometimes people even intentionally gather for such communication — that's when they create so-called spam rooms.
A spam room is a place where it is allowed to write anything, and no one will reproach for off-topic.
Why is it important to know about spam? The thing is that on many forums and in chats, spam is considered undesirable, as it prevents other participants from focusing on the main topic. If you know what spam is, you can avoid these situations and communicate in a way that is beneficial for everyone.