instant messaging

noun 0.925

instant messenger

noun 0.917

short message service

noun 0.622

text message

noun 0.609

instant

noun 0.603

text messaging

noun 0.600

aim

noun 0.594

private message

noun 0.588

message unit

noun 0.572

messaging

noun 0.566

messenger

noun 0.553

chat room

noun 0.551

chat

noun 0.542

imp

noun 0.540

immediate mode

noun 0.538

group chat

noun 0.538

chatting

noun 0.537

ism

noun 0.529

message

noun 0.523

intercom

noun 0.521

emoticon

noun 0.504