Twin directories of data:

[DIR]  ftp://ftp.fgan.de/ids-devel/data/
[DIR]  ftp://ftp.danlan.com/ftp.danlan.com/data/
[DIR]  ftp://ftp.parc.xerox.com/pub/sprite/welch/osdi94/data/
[DIR]  ftp://ftp.cs.rutgers.edu/pub/yueyue/data/
[DIR]  ftp://ftp.cs.rutgers.edu/dcs/Grad/data/
[DIR]  ftp://ftp.cs.rutgers.edu/dcs/grad.BAD/data/
[DIR]  ftp://ftp.mainphrame.com/data/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/champ/chftp7/data/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/home/mg/dipri/Mentelle/data/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/champ/chftp5/data/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/home/st/ivan/SOFT/LOTOS_6/pictures/costa_rica/data/
[DIR]  ftp://ftp.gfz-potsdam.de/pub/home/ig/rico/data/
[DIR]  ftp://ftp.ski.org/pub/Norcia/data/
[DIR]  ftp://ftp.mimuw.edu.pl/mirror/ftp.gust.org.pl/pub/TeX/GUST/distrib.4pc/data/
[DIR]  ftp://ftp.mimuw.edu.pl/People/lewar/images/skanska_kasia/polish/data/
[DIR]  ftp://ftp.unb.ca/pub/misc/MVSlpd/source/dasdfunc/data/
[DIR]  ftp://ftp.sonycsl.co.jp/CSL/ml/alfaml/data/
[DIR]  ftp://ftp.eenet.ee/pub/cpan/authors/id/K/KW/KWILLIAMS/data/
[DIR]  ftp://ftp.eenet.ee/pub/FreeBSD/distfiles/xorg/data/
[DIR]  ftp://ftp.eenet.ee/doc/LDP/linuxfocus/Nederlands/data/
[DIR]  ftp://ftp.eutelia.it/pub2/CPAN_Mirror/authors/id/K/KW/KWILLIAMS/data/
[DIR]  ftp://ftp.eutelia.it/pub/Slackware_Mirror/slackware-12.1/source/x/x11/src/data/
[DIR]  ftp://ftp.eutelia.it/pub/Slackware_Mirror/slackware-current/source/x/x11/src/data/
[DIR]  ftp://ftp.eutelia.it/pub/Info-Mac_Mirror/data/
[DIR]  ftp://ftp.eutelia.it/pub/Slackware_Mirror/slackware-12.0/source/x/x11/src/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/Classes/3022/Bingham/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/Classes/5021/Bingham/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/Classes/5303/Bingham/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/Classes/5401/Bingham/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/macanova/OLD/src/testfiles4.07/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/macanova/docs/data/
[DIR]  ftp://ftp.stat.umn.edu/pub/macanova/src/testfiles/data/
[DIR]  ftp://ftp.cwp.mines.edu/pub/data/
[DIR]  ftp://ftp.iaea.org/dist/NAHU/WJNM/HUMAN HEALTH WEBSITE/data/
[DIR]  ftp://ftp.saintjoe.edu/pub/linux/slackware/slackware-current/source/x/x11/src/data/
[DIR]  ftp://ftp.saintjoe.edu/pub/CPAN/authors/id/K/KW/KWILLIAMS/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/macros/latex/contrib/thuthesis/example/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/macros/latex/contrib/unicode/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/graphics/pstricks/contrib/pst-geo/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/language/hyph-utf8/source/generic/hyph-utf8/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/fonts/utilities/ps2pk/ps2pk15x/dos-emx/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/dviware/mdvi/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/CursoXML/programas/Jena-2.5.4/doc/examples/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/CursoXML/programas/Jena-2.5.4/doc/inference/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/CursoXML/programas/Jena-2.5.4/doc/tutorial/RDF_API/data/
[DIR]  ftp://ftp.inf.utfsm.cl/pub/CursoXML/programas/Jena-2.5.4/src-examples/data/
[DIR]  ftp://ftp.uni-magdeburg.de/pub/mirror/linux/slackware/source/x/x11/src/data/
[DIR]  ftp://ftp.aoc.nrao.edu/pub/software/sde/data/
[DIR]  ftp://ftp.ips.gov.au/wdc-data/spec/data/
[DIR]  ftp://ftp.ips.gov.au/data/