- BTW
- By the way
- IMO
- In my opinion
- IMHO
- In my humble opinion (humble=謙遜な)
- FYI
- For your information
- OTOH
- On the other hand
- ASAP
- As soon as possible
- AFAIR
- As far as I recall/remember
- RTFA
- read the fucking article, applies mostly to Slashdot threads, for users who make comments on a story without having read it first.(とりあえず記事をちゃんと読め)
- RTFM
- read the fucking manual (とりあえずマニュアル読め)
BTW，IMHO，FYI，OTOH など
