I'm not that picky. I'm okay with missing punctuation, or not capitalizing the start of sentence, and such - I write like this myself all the time, though on IM

I'm not that picky. I'm okay with missing punctuation, or not capitalizing the start of sentence, and such - I write like this myself all the time, though on IMs specifically (where it used to be common to press <enter> at the end of a thought, not at the end of a sentence). I'm okay with occasional typo. I'm not okay with text that's hard to impossible to parse due to the sheer volume of errors. And I'm not okay with lack of care behind sending "write-only" messages. Surely, if the sender read what they wrote, they'd realize that "yea no tim 3 bokS APSL" is not comprehensible. It's merely decodable, with significant effort. (Notice the difference between your example and mine is that yours lacks the distinctive set of typos/errors made by someone who types on a phone, badly. In fact, guessing what kind of device one uses is helpful - but sometimes insufficient - in decoding the gibberish :).)