Grammar fascists are a bore it’s true. But bad grammar makes you look foolish. That’s fine if you’re 17, but if you’re writing and publishing a blog, e-book, or anything else for that matter, basic good grammar will create a much better impression.
One of the most common mistakes I see on the web is the use of ‘your’ when the writer means ‘you’re’. It’s a real howler. But I’ve seen it from people who write really well, clearly, with virtually no other grammar faults. They’re clearly well-educated and smart people but they seem to have a blind spot here.
There’s obviously some confusion out there, but the difference between the two is really quite simple to grasp.
‘Your’ is possessive: my apple, your apple, their apple, our apple.
You’re is the shortened form of ‘you are’: I am blogging, you are blogging, they are blogging, we are blogging.
This becomes: I’m blogging, you’re blogging, they’re blogging, we’re blogging.