Permalinks in 2007

I have done four posts so far for #throwbackthursday, And I thought I would share the general permalink structure for 2007. Some of the top websites (I am just guessing, but sites I think were top back then), have a .html or .php attached to the end of there posts.

kottke.org used .html, but the site is currently a custom site with a much different permalink structure.
a link of http://www.kottke.org/remainder/07/05/13417.html which now goes to http://kottke.org/07/05/on-the-battlefields-of-iraq-and-afghanistan. His website is one of the only websites which redirects the old post to the new updated post.

consumerist.com used a .php file extension for there website, I don’t know what the blog software was but it is now using WordPress. The permalink structure back then for them was:
http://consumerist.com/consumer/tools/farecast-can-save-you-50-260915.php
which is now:
http://consumerist.com/2007/05/farecast-can-save-you-50.html
They don’t have redirecting setup so I have to Google the title based on the url.

laughingsquid.com is exactly the same!
http://laughingsquid.com/virb-raising-the-bar-for-social-networks/

lifehacker.com used and uses a custom blogging software. The old links used to be:
http://lifehacker.com/software/exclusive-lifehacker-download/automate-timed-mouse-clicks-with-clickwhen-260445.php
and now they are:
http://lifehacker.com/260445/automate-timed-mouse-clicks-with-clickwhen?tag=softwareexclusivelifehackerdownload
They have a redirect from the old post to the new post.

www.boingboing.net is exactly the same
http://www.boingboing.net/2007/05/14/why_do_las_la_brea_t.html

Just a few examples. When I moved obeygiant.com over to WordPress, it didn’t have single pages for single blog posts. It was basically just archives of blog posts so I didn’t have to think about preserving the url or permalinks. But now that I move forward with websites I think hard about the permalink structure than I did before. I want to make sure that they last over time. And also, if there is a current one, not to mess with it.