Robert Scoble came up with the idea in a recent blog post to make a list of 'obsolete skills.' He describes these skills as things we used to know that are no longer very useful to us, a few examples include:
The community has started to create a much larger list of these obsolete skills, check out the full A-Z list. Feel free to contribute more if you can, and if you have the time, please make a page with a short description of the skill.