Well, to me, the message (content) is always more important than the medium (proper use of grammar). Improper use of grammar and spelling mistakes does take away from the credibility, but if the thought that the person is trying to express is sufficiently valid, then I am willing to look beyond the mistake.

(I was under a lot of pressure to get both the than and the then right in that post. I'm pretty sure I got it right.) ;)

^^ I concur, but a little more care will do wonders with or without credibility.

You are American so I will let those two slide. (Although I'm not sure there is a "k" in impeccable in American English either)

Yeah that's the problem. If I read someone's post and it's incoherent then I'm not going to understand what they're saying or take them seriously. I'm not suggesting everyone must ensure they use the correct spelling and grammar every post, everyone makes mistakes. I'm finding myself skipping more and more posts though because they're totally incomprehensible.

It's the same in any language. You should see the German e-mails and letters my colleagues write each day...

In Germany many people confuse "dass" and "das" and everyone (especially adults) writes "Straße" (street) - which is still Straße even in new orthography - as "Strasse".

And why do you think Japanese coaches for DS sell in Japan? People unlearn their languages all over the world.

From a linguistic point of view though this is quite interesting as the languages might actually change faster due to laziness or unawareness of many people (e.g. in a few decades "than" might have been disappeared and then "then" might be used for both, than and then).

If we like it or not: Languages follow the people, not the other way round.

It's just because people type fast, aren't thinking, and it doesn't really matter (you know what they are trying to say).

I come from the school that it is more important to have good content.

Which brings me to my question:

Why are the posts so ill-conceived?

I was mostly addressing the issue of homonyms that you mentioned in your first post. They rarely lead to serious incomprehension.

i haz bad grammer! ^.^

Tsk, tsk.

You did well but you made one mistake; You only put a single exclamation mark. The minimum requirement is three in a row, and you get extra marks if you put a '1' in there as well.

Here is how she should have done it: