N

Meaning	And
Type	Abbreviation
Usage	General (not just online)
Rank	Common - used often
Comments	Also abbreviated 'n' (with quotes). Used offline as well.

Meaning	In
Type	Abbreviation
Usage	Online Only (chat, messaging, e-mail)
Rank	Average - used occasionally
Comments	Because typing "in" takes just way too long.

Enter Acronym:

Acronyms and abbreviations used in e-mail, online chat, instant messaging, and text messaging.