Bad typos and left out punctuation

I see this so often in so many places. I am not perfect, but I certainly write better than that. How do you get to work proofreading?

It seems like no one knows good grammar, how to spell or anything at all about punctuation any more. The Dumbing Down of America seems to be working. I proofread part time, too, and the kind and mumber of mistakes made are just amazing.

huh? what anthology? not that I read much Trek fic, especially published Trek fic because its generally both bad Trek and bad SF

Shaw king isnit.

But who was it published by? That's the real question. I've also found loads of errors in certain published books, but those so-called published books are actually self-published so we can safely assume there either was no editor or no good editor. I've only run into errors in novels from big-publishing houses on rare occasions. More in small-press publishers, but the most are in self-published books.

I can excuse grammatical errors and punctuation mistakes on some things, because it does happen, especially if they are not glaringly obvious mistakes. There is no excuse for typos in published work, though, because almost every word processing program offers spell-check, and I don't think that anyone writes the "old fashioned" way (on a typewriter) anymore. When a book (or any other material is published for public consumption, however, I feel that it should be free from all errors ... or at least as many as possible. I have seen a poster stating "It's you're right to vote". I really wanted to make a note on it saying "It is your right to become educated as well", but I resisted the urge.