This is nice read, even more since there appears to be few quite different opinions regarding subject.
I'm not native English speaker but I'm giving my best to write up to required standard, if I sometimes fail to do that sorry

Somebody mentioned government policy about importance of understanding above the linguistic form. That is, for good or for worse, trend in linguistics in general, and it does make sense. It is better to spend time learning new words and phrases then to waste it on breaking your head about a/an and the use IMHO.
I also belong to younger generation (just turned 30

) and it is true that most people my age and younger tend to write as short as possible due to faster way of living and information exchanging. Some things are usually acceptable (like IMHO, Tx etc.) but question is where is the line and above all is there one at all? I don't think that the way people communicate will go backward, especially in sense of use "thou shalts

", and before anyone tells anything about Bible be aware that I used to go to Catholic classic gymnasium seminary
The fact that I perfectly understand English, some German and Italian an can communicate (in quite good English if you would agree?) is perfectly enough to me. Off course, it is true that my written and spoken English could be better but it would require more practice than I currently have, or even have time for. My girlfriend is nut for language, literature and grammar and she is known for warning people about irregularities, so to speak, when talking to someone, and when that someone is me it makes me boil!
Point is, we all should be more tolerant about this matter since it is about to go only worse, and I think there is nothing that can be done to prevent people from "downgrading" language (actually it could be seen as improvement since more concise in this context is better, easier to learn).So, try to be relaxed and not to get annoyed of something that is going one and will continue to happen.
I had once problem with guy from London, highly educated dude, who spoke so distorted English that it was barely understandable to some of his colleagues from USA and I asked him in front of few people if he speaks English, I could not understand not a word of what he was telling. Aussies are easy to understand, at least it is my experience.