But you using "tryna" instead of "trying to" in another thread is not the overall point of this discussion, even if it's used as an example. Yes, when I read that post I had to think twice what the word was meant to mean, but it was otherwise understandable text.
Your post I replied to took a lot more read throughs though. I get the overall idea in it, but I just can't understand it. It's not only about misspellings of certain words, but how the sentences are formed. It's like deciphering random globs of letters coughed on the screen.
As far as I know less than 50% of people on NeoGAF are from the US. I don't know what the percentage for non-native English speakers is, but I'd vager it's substantial. You can write however you like, but if you choose to use slang don't be surprised if you're being disregarded by a large body of people.