email slang and shortenings

[sarahduggan]

hi, can you please tell me wot the following slang terms are ie. b/c i know is because and dw is dont worry. but i dont know what these mean: 'tc' and 'w/b'

[iwantthatone]

Write Back?

Take Care?

Things like that perhaps...depending on where they're written in the E-mail, and in what context.

[moosa]

w/b might be welcome back

[tigga]

and what about G.A.B ? any ideas ?

[Kerplunk]

Grow a Brain?

Good and Bad?

Grapes and Bananas?