character appended to the beginning of a word to denote that anything preceeding this word is now complete or terminated. Taken from hypertext language tag conventions.
Commonly-used Internet character, synonymous with a question mark. This is because on a keyboard, ? and / appear on the same key, with a sometimes-forgotten shift key differentiating between the two. In a hurry, AIM users will sometimes neglect going back and fixing the question mark.