Yuyo will be the default theme for Ubuntu MATE starting from the 15.04 release. If you want to contribute to Yuyo development then you can find it hosted on GitHub.
I'm trying to set up a SSH key for Launchpad and I got this:
johnblood@johnblood-HP-Compaq-nx6325-RM158UT-ABA:~$ sudo ssh-keygen -t rsa
Generating public/private rsa key pair.
Enter file in which to save the key (/root/.ssh/id_rsa):
Created directory '/root/.ssh'.
Enter passphrase (empty for no passphrase):
Enter same passphrase again:
key_save_private: passphrase is too short (minimum four characters)
Saving the key failed: /root/.ssh/id_rsa.
I think it’s the Bold or Ultra-Bold flavour of Source Sans Pro, based on a look at the SVG code of some of the logos and trying the font out interactively.
In passing, Typecatcher is a little-known but brilliant way of trying out Google fonts using a Linux native application …