Yū Madobe
Yū Madobe was a domain used by Microsoft Japan in order to promote Windows, notably with their OS-tans.

They abandoned the domain at some point, then several squatters caught it, before I bought it myself from (I can recommend them, they have very interesting expired domains at reasonable prices for your business or Seo if you are looking for that).
Here is the latest known archive of this root page:

I am Pttn, an avid OS-tan fan! I collect almost everything related to these anime girls, so having this historical domain in my collection is super neat!

Useful links about OS-tans

If you landed on this page, you are likely a fan of OS-tan too, or at least you are interested in them! You probably arrived here by clicking on a link from an old article or so while looking for info about OS-tans. So here are some useful links about them.

General links

For collectors