Meaning Thanks for letting me know
Type Acronym
Rank ★ ☆ ☆  Uncommon
Usage Online Only (chat, messaging, e-mail)
Comments T4LMK is an even faster way of writing "thx 4 lmk." It is typically used as a response when someone provides you with specific information.
Example "Looks like we're meeting at Caribou instead of Starbucks 2nite.
T4LMK, c u there."
Updated November 7, 2011