I mention this for the, what, three of you who don't read the Yarn Harlot.
Over on her blog, today, she's discussing how she's trying to knit a pattern from Vogue Knitting 2006, and she found on Ravelry that there's an error in the pattern. So she went to the web site at VK and got the corrections.
And the corrections are wrong.
Details at her blog, here.