This article is from the Real Ale FAQ, by with numerous contributions by Brett Laniosh others.
A: In order to speed up typing, it is common on the Internet to use
acronyms. Common examples are: FWIW (For what it's worth), IIRC (if I
remember correctly), HTH (hope that helps) and RTFM (read the flaming
manual). You can find these and others at: