My old blog’s links are still broken. I’ve poked around at how to make WordPress respect the old links (archives/DDDDDD.html), perhaps by translating them to the new permalink structure (YYYY/MM/DD/TITLE/) or searching for the post’s content.
Typically I try very hard to adhere to the practices I want others to follow, such as never breaking a link (perhaps by providing redirects). However, right now for me I feel that Google will find all the new content, and it’s not worth my time to fix the site.