It's not like using the wrong "your" or "there". I think some people really don't know it's a contraction :(

It's a pet peeve of mine, but I caught myself doing it today on a Facebook post.

is there a "twitchy eye..on the verge of homicidal rage..." type meme?

let's not forget when they use "then" instead of "than"

"I did this because i thought it 'would of' been better 'then' that"

One day someone will use both of these in the same sentence for real. I worry that making a reply meme won't satisfy my urges.