"Incidentally," in online shorthand

• "Incidentally," in chat rooms
• "Incidentally," in texts
• Start of a text-message afterthought
• Texter's afterthought lead-in
• "Oh, yeah ...," in a text
• "Incidentally," to a texter
• "Incidentally," on IM
• Start of a texted aside
• "As an aside ...," in a text

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
Internet abbreviation of by the way , in use by 1989.