The "OLGA Archive" is an amazing collection of over 3000 ChordPro formatted song files. I could not find out what the history of it is, but it is still publicly available here:
http://getsome.org/guitar/olga/chordpro/

No proper copyright statement can be found on the site, however, this is an excerpt from the readme file:

This archive is mirroring nevada's collection of CHORDPRO songs as well as most all CHORDPRO songs posted to both newsgroups alt.guitar.tab and rec.music.makers.guitar.tablature. In addition I am converting songs which are in a fairly good chord format to the CHORDPRO format.

Jan-Erik Schuch

Well, Jan-Erik (and "nevada"), thank for the great collection of ChordPro songs.

Should I violate any copyrights by re-posting the files here, please let me know. See the Help -> About page how to contact me.