Lots of open source projects would be happy with an additional mirror. See http://www.openbsd.org/ftp.html#layout http://www.openbsd.org/ftp.html#layout for one

Lots of open source projects would be happy with an additional mirror. See http://www.openbsd.org/ftp.html#layout http://www.openbsd.org/ftp.html#layout for one project's policy. I'm sure that many other projects have similar pages.