One of my pet peeves (of which I have many), is when suppposedly professional entities cannot take the time to proofread their publications.
In the interest of trying to educate myself, I decided to sign up for the email newsletter I heard about on the radio from "PennyStockChaser.com." I was promptly bombarded by emails, several times a day. The straw that broke the camels back, though, was an email that proudly proclaimed in the Subject Line the word "losers," spelled with two "O's," "looser." Nice.
It's not that difficult, people. As near as I can tell, there is no such thing as the word, "looser." When you try to use it, you become a "Loser."