It looks like no-vowels slows down my reading to about 50% of original speed, whereas no-caps slows me down only to maybe 90%. This might be because I spend so much time on IRC.
if acronyms and proper names were capitalized, we'd have everything covered? punctuation already signals the end of a sentence.
i could read and comprehend what you said in your example, but it required more mental effort. i don't think reading a blog without caps requires more mental effort, but if it does to most people, then i might have to switch back.
No, whether you want commas depends on the sentence. Most good writers wouldn't punctuate that sentence as you did. Too halting for such a short sentence.
But this is not the point here, is it? The point is that any abbreviation with periods in it could appear in the middle of a sentence.
i can only think of three exceptions where you'd need capitalization for additional information: acronyms, proper names, and abbreviations.
i've been doing this as a test since may 13, 2009. i've never run into the problem of a misunderstanding before due to lowercase and i usually write this way in all casual written forms of communication (email, sms texting, blogs, comments). i originally picked it up from a designer i admired back in 2008, and the habit kind of stuck after trying it.
But it's not about misunderstanding. We've all been on the Internet long enough to be able to slog through 1337speak and poor spelling and grammar, if we have to, with probably 99% understanding. However, it takes longer. As it is with capitalization--it doesn't prevent overall understanding, but it does slow it down, at least a little.
That said, maybe that's acceptable to you. Maybe you're going for a certain aesthetic.