"gtg but c u soon"

• "Bye," in a text
• "C u on da flipside!"
• "Bye for now," in textspeak
• Texter's "Ta-ta!"
• Texter's toodle-oo
• "lol, peace"
• Texter's "ciao"
• IM sign-off
• What best-selling 2004 young adult novel was written entirely in the form of instant messages?

Wikipedia Word definitions in Wikipedia
ttyl or TTYL may refer to Talk To You Later, in Internet slang ttyl (novel) , a 2004 novel by Lauren Myracle