Yes, definitely. Grammar offenders need to die.
Seriously though, I don't really mind occassional mistakes. No one is perfect. However, there's a few words/phrases/whatever that get mixed up too easily:
- you're vs. your
- they're vs. their
- I'm vs. Im
- I vs. i
- lose vs. loose
There's probably many other simple mistakes as well, but it shouldn't really be that hard to correct at least the most common mistakes. It's a handful of words/phrases you have to learn to write properly, and your text already looks a lot better. Don't be lazy, it only saves you a couple of seconds max if you're writing a long text, and less if you're writing a short text.