Permalink structure changed
On permalinks
Today, I changed the permalink structure for this blog which means that the old links to articles won't work any longer.
Previously, a permalink was made out of the data and the postname and had the format /YYYY/MM/DD/Postname (year/month/day/name of the post). That normally works fine, but I often edit certain posts (like the changelogs) and update the times tamp so that the post will reappear on the top of the blog. This will, of course, also change the permalink for that post (because the date changes) and this will then invalidate links - for example, any external link to that post or links in search engines.
Now, the permalinks have the form /category/postname which means that they will no longer change when I update a post and change its times tamp.
It also makes it easier for you to file bookmarks, because you can now assume that the link to any given article will never change again, even when it is promoted back to the front page by editing its posting timestamp.