The first part would be the newest edition to that post; the rest is a couple of days old. I/we always proofread our articles, but we use an external service for that (plus a proofreading plugin). So I don´t know if there were some technical difficulties going on during that day. I think that might be the case, since I read through the text manually just now, and I found some errors which I corrected. I´m sorry about this, we will try to improve our proofreading skills ;)