What Do OTOH and BTW Mean?

Factual Questions
1

What do BTW and OTOH mean, and are these abbreviations known by computer-savvy people which I who can barely operate one don’t know?
signed Not Complaining But Just Curious

2

IANAE, but IIRC, OTOH is “on the other hand” and “BTW” is “by the way”. YMMV.

3

OTOH = On The Other Hand
BTW = By The Way
LOL = Laughing Out Loud
ROTFLMAO = Rolling On The Floor Laughing My Arse Off

4

mb (merci beaucoup)

5

Here’s a thread with many acronyms.

6

Here’s a link .

Here’s another.