BTW is another slang term that’s commonly used by social media users. These slang terms on social media are common among those who are either addicts or have been using social media for a long time.
These terms are used to save time. But, how much time can you save by typing a few fewer words? Duh!
Anyways, the short form for BTW is 'By The Way.'
It’s used when you need to add more context to a story or want to add another story to make the conversation longer.