In the era of text messaging, tweeting, and digital communication, capitalization can be a Real Bitch.
From a young age, we’re trained to capitalize the first letter of defined terms, the beginning of sentences, and proper nouns — the names of people and any specific places or things. But over the past few years an increasing number of Extremely Online individuals have invented a series of new capitalization uses that don’t play by the rules set out by English teachers and style guides.
Nowadays, there’s the common practice of typing a word in all caps to indicate SCREAMING, the use of aLteRnAtInG cApS (often associated with SpongeBob memes) to convey mockery, or a complete lack of capitalization, which can be done purposefully to come across as extremely chill, or simply because one can’t be bothered to occasionally reach for the Shift key. Read more…
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Source : A look at the Ubiquitous Habit of capitalizing letters to make A Point