In September 2009, a woman from New Zealand received compensation for being unfairly sacked. The reason for losing her job: sending emails that used too many sentences composed in capital letters (not to mention bold and red-coloured text). The story caused quite a stir at the time and was picked up by Laura Schocker of BBC News Magazine who posed the question Why do CAPITAL LETTERS so annoy us?
Print vs Web
In the article she referred to the historical foundations of print. At one time it was common to see full bodies of text printed in uppercase but as typography developed, this approach was dropped, due to the excessive amount of ink use on a page; all this ink gave a dark grey appearance and as a result proved difficult to read. The introduction of lowercase type changed this by bringing more whitespace into the page. As a result, capital letters were used for the beginning of sentences and for proper words, while bold and italic text was used for emphasis.
On the web, and in general writing, these standards are still in use today... or at least they should be.
Angry vs Emphatic
When writing emails or any web content on the internet, there’s a general rule that frowns upon the use of blocks of capital letters. It's seen as shouting and as such deemed aggressive behaviour or poor etiquette. There are exceptions to the rule, most commonly for short headings, where uppercase type can bring focus to a specific section. Or, of course, if the intention is to actually shout at the recipient.
Instead of capital letters the recommended approach is to use italic or bold text. It's surprising how the current generation of web users aren't aware of this. Perhaps it's laziness or maybe it's just plain ignorance. Our advice? Follow these simple rules of Netiquette and you'll be fine.