"If I may digress ...," in texts

• Start of an aside, to tweeters
• "Oh, another thing ...," in a text message
• "Incidentally," to texters
• Texter's segue
• Texter's "Oh, and another thing ... "
• "Incidentally," to a texter
• Start of a chat room afterthought
• Lead-in to a texter's afterthought
• "Oh, before I forget..." in Internet shorthand

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