Consistent look is great. Lets me get on with reading the content, which is the important part.

There's no excuse for breaking existing links though, particularly for a blog as popular as this one.

Consistent look is great for consistent content. But if the content is different, having a different look helps the user get to the content.

http://blogs.msdn.com/b/oldnewthing/archive/2011/09/21/10214..., from https://news.ycombinator.com/item?id=3022224, redirects to the right page. Which links are broken?

Some of the variants of the links are broken, acknowledged via blog post: https://blogs.msdn.microsoft.com/oldnewthing/20160118-01/?p=...

Oh, I guess they fixed it. It was broken before.