What is the most annoying and widely posted typo or misspelling ? I read many of them daily and have made plenty myself. The winner for me, by a long shot, is lose/loose and their many variations. I've seen this error made repeatedly by some of our most articulate and intelligent posters (who'll remain nameless mainly because I can't think of who they are at the moment). If you rarely win, that means that you often lose, which may or may not make you a loser.... but never a looser, which is how I like my pants after a full meal.... as in loose = not tight.
I can't believe how many people don't know the difference between "their" as used in the possessive case, and "there" as in "over there". The other one that really gripes me is those who don't know the difference between "you're" for "you are", and "your" as in "belongs to you". How did these people ever get out of 8th grade English class? Don't they teach basic English grammar anymore?....looks like a generation of illiterates.
The other one that chaps my hide is adding 's when making something plural. Using the 's means possessive ...to make it more than one, just ad an s with no apostrophe.
I absolutely hate the word "prolly". It is used so much on message boards it is not even funny. The one good thing about it, you immediately know that the poster who uses "prolly" is probably an idiot.
Lose/loose is a close second. How can you not know the difference?
Yeah, I have heard that one too..."prolly" when they mean " probably". People who can't speak the King's English usually can't write it, either....they write like they speak. I worked as a copy editor for several newspapers in my younger days...once had a young female reporter from Mississippi that wrote about "bow weavers" and "bells" of cotton. She sure was mad when I corrected her copy and explained to her about "boll weavils" and "bales" of cotton. You meet all types.