1. formal (this is the “perfect” kind)

2. informal (this is the kind on Yahoo Answers)

In society, formal writing is used in business situations and in school. This is the kind of writing that is proofread until it is “perfect.”

In social areas, however, the scene is quite different. People often make careless mistakes that, in formal situations, would have been fixed immediately. In a social environment, it is not necessary to have “perfect” grammar. There is only a need to understand the meaning of the phrase or sentence.

And it’s spelled ‘literacy’, not ‘litteracy.’

P.S.

“It’s” is ‘it is’. You want to use ‘its’.

I understand what Josh is saying, but the problem with ‘informal’ grammar is that not enough attention is being paid to how other people perceive what is being read. It makes sense to them, so the inevitable thought it that it should make sense to others. Unfortunately, that’s so often not the case. I can’t tell you how many times I’ve had to re-read a sentence until I figured out what the person meant because of their idea of what informal grammar is. It just makes more sense to me for everyone to try and stick to standards. And so often, I see teenagers who are unable to separate formal and informal writing in their essays. As a result, I see more and more writing that is unclear and even at times, unintelligible.