Allow me to illustrate my point.
If I walk into a store, and a representative asks me "How you doing today?" I am not going to say, think, or do anything to correct him. It is perfectly fine. I understand what he is asking, and I will respond accordingly. This is equivalent to typing in chat during a match in League. Anyone who is wasting time in-game to correct grammar and spelling is doing exactly that--wasting time.
However, if this representative then decided to type up a proposal for his employer asking for a promotion which reads "I should be promoted. I do good for you're store. Your a great boss who's trained me good and always gave me opportunitys to learn new things. If I am promoted than you will not be dissapointed." then this will not work well in his favor. This is equivalent to starting a new forum on the Boards and expecting others to read past the poor grammar and spelling . It's just not going to happen. Riot, and many others, will not be able to respect your thoughts and ideas (assuming they read past the first few lines) because of the disregard for writing etiquette, and those thoughts and ideas will be a waste of time and space.
Some people do not realize this, so I figured I would make this post as a PSA. Oftentimes, there are individuals who have great opinions that get ignored because of the presentation.
You can tell me that this chicken is going to taste good, but, if it does not look and smell good, then I probably will not eat it.