[blml] abbreviations

[Jeff Easterson]

Ahoy blml!  In the 4-5 days since I last wrote about abbreviations used 
not in the list, following abbreviations have appeared.

WTP
TP
IBTD
IIRC
ZA
np (possibly this was a typo).
Can anyone supply me with meanings for the above?  Am I the only blmler 
frustrated when encountering abbreviations not on the list and which he 
doesn't recognise.  (A few seem to be "internet slang".  But are all of 
us experienced internet users?  I'm not.)  Ciao, JE