User blog comment:HiddenVale/Enlighten me, please/@comment-9548103-20121008233257

The damage and type of Spam will vary. Along with the ones said below, there is also false information, common on many wikis. Also, there is "Spambots." bots created by companies to improve search results. Their IPs change frequently, making indefinite blocks hard to keep on-target. There is also template spam, and that is only seen though Recent Changes. Also, there is "User Targeting." That is when a User threatens or discriminates another User or group of Users whom dislikes him/her. One more type: "Redirect usage." The spammer makes an external link to a website, and disguises it as a regular link. This can be prevented by having various colors for links, as normally spammers don't understand source enough to change font colors.

Chat Spam is much harder to find, as Users may spam chat with non-ChatMods and act kindly with ChatMods. Screenshots are the way to go with netting chat spammers. They can also do different things than just same-topic talk.
 * They can suggest inappropriate things in chatrooms.
 * Users may threaten others.
 * They may PM people dumb things.
 * Anything previously stated by me or other people.