Acronyms can be easily expanded with help of Type Pilot. Just type an acronym and Type Pilot will substitute it with a full phrase. Here are some examples:

AFAICAs far as I’m concerned
AFAIKAs far as I know
ASAPAs soon as possible
BRBBe right back
BTDTBeen there, done that
BTWBy the way
FAQFrequently asked question
FYIFor your information
HTHHope this helps
IANALI am not a lawyer
IMHOIn my humble opinion
IMNSHO   In my not so humble opinion
IMOIn my opinion
IOWIn other words
LOLLaughing out loud
MOTASMember of the appropriate sex
MOTOSMember of the opposite sex
MOTSSMember of the same sex
OTOHOn the other hand
ROTFLRolling on the floor laughing
RTFMRead The Fine Manual
WTFWhat the heck
YMMHYou might mean here
YMMVYour mileage may vary

Insert phrases quickly in any text editor! For example:

1) You type: if1

2) You get: If you have any other questions, please don’t hesitate to contact us.

This letter can be typed just by pressing several keys:

Acronyms can be easily typed with help of Type Pilot

All this you can make with Type Pilot.

Common Phrases list: download and use!