For the last 6 years our good friends at Oregon State University Open Source Lab have been doing an incredible job of providing mirroring services for many big Free Software and Open Source projects.
Right now the Open Source Lab is looking for funding, and they are just asking for $6, one per each year they have been online.
GNOME already signed up with $60. Every user of this fantastic mirror and hosting service is encouraged to donate. Give them 6!