Common Online Abbreviations (Sometimes Used at E Cafe)

[Maria]

24/7: 24 hours a day, 7 days a week
AFAIK: As Far As I Know
ATM: At The Moment
BTW: By The Way
FTR: For The Record
FWIW: For What It's Worth
FYI: For Your Information
HTH: Hope That Helps
IIRC: If I Recall Correctly
IME: In My Experience
IMHO: In My Humble/Honest Opinion
IMO: In My Opinion
IOW: In Other Words
IRL: In Real Life
ISTM: It Seems To Me
JMO: Just My Opinion
KWIM: Know What I Mean?
LOL: Laughing Out Loud; Laughing On Line
OP: Opening Post; Original Poster
OTOH: On The One Hand; On The Other Hand
POV: Point Of View
ROTFLOL: Rolling On The Floor, Laughing Out Loud

[Barbara]

Thank you, Maria !
I had never heard of any of these except the handful of most commonly used ones.
I can't believe there are so many abbreviations for expressions out there in use.
[I doubt I have ever used even one, as it seems rather impolite.]