If you didn't, don't say you did!

I keep seeing this lately: people online are writing "did" when they mean "didn't/did not," "does" when they mean "doesn't/does not," or "can" when they mean "can't/cannot." Most of these can be explained away as simple typos; however, these mistakes change the meaning so completely that you are saying the exact opposite of what you meant to say.

The solution is easy: read over what you've written before you press submit. There is no need to post it so fast that you end up saying that you "can imagine living without" your significant other. He/She won't be so happy to read that on your Facebook.