"OTOH" is often spelled all uppercase, but can be also spelled "otoh". All versions mean the same thing. Just be careful not to type entire sentences in uppercase, as that is considered rude shouting.
Example of OTOH usage:
- (first user:) I think you should buy that new i7 computer. Your current machine sucks.
- (second user:) My wife would kill me if I spent 2 grand on a new computer.
- (second user, again:) OTOH, she might like a faster machine in the house, if I can get her that interior design software to go with it.
The OTOH expression, like many cultural curiousities of the Internet, is a part of modern English communication.
Read more Internet abbreviations and shorthand expressions...