Twin directories of preview:

[DIR]  ftp://ftp.inf.utfsm.cl/pub/tex-archive/macros/latex/contrib/preview/
[DIR]  ftp://ftp.linux.ncsu.edu/pub/realmlinux/realmkit-7.2/i386/preview/
[DIR]  ftp://ftp.linux.ncsu.edu/mirror/ftp.redhat.com/pub/redhat/linux/preview/
[DIR]  ftp://ftp.iaea.org/dist/adpi/081125/CMbaEnglish/preview/
[DIR]  ftp://ftp.iaea.org/dist/adpi/081125/CMbaSpanish/preview/
[DIR]  ftp://ftp.iaea.org/dist/adpi/081125/PLagodaFrench/preview/
[DIR]  ftp://ftp.iaea.org/dist/adpi/081125/PLagodaGerman/preview/
[DIR]  ftp://ftp.internat.freebsd.org/pub/FreeBSD/ports/graphics/preview/
[DIR]  ftp://ftp.eridani.co.uk/pub/MailStripper/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/windows/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/themes/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/palm/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/pocket/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/rim/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/wince/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/epoc/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/ipod/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/pda/newton/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/mac/palm/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/mac/pocket/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/mac/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/games/preview/
[DIR]  ftp://ftp.skynet.be/mirror1/tucows.skynet.be/linux/preview/
[DIR]  ftp://ftp.beos.hu/pub/beos/development/samples/preview/
[DIR]  ftp://ftp.beos.hu/pub/beos/updates/preview/
[DIR]  ftp://ftp2.bungie.org/marathon-arena/preview/
[DIR]  ftp://ftp.kreonet.re.kr/CTAN/macros/latex/contrib/preview/
[DIR]  ftp://ftp.prz.rzeszow.pl/pub/gentoo/portage/gnustep-apps/preview/
[DIR]  ftp://ftp.tnt.uni-hannover.de/pub/soft/khoros1/manual/vol2/preview/
[DIR]  ftp://ftp.nz.debian.org/gentoo-x86-portage/gnustep-apps/preview/
[DIR]  ftp://ftp.au.freebsd.org/disks/la6/.p/pclinuxos/live-cd/english/preview/
[DIR]  ftp://ftp.mat.univie.ac.at/pub/teschl/autoupdate/preview/
[DIR]  ftp://ftp.pcmag.ru/InStyle/RYABTSOVA/2008_12_16/preview/
[DIR]  ftp://ftp.uni-hannover.de/pub/mirror/bsd/FreeBSD/development/FreeBSD-CVS/ports/graphics/preview/
[DIR]  ftp://ftp.inescn.pt/pub/util/.+eclipse/technology/linuxtools/N200904221802/eclipse/plugins/org.eclipse.cdt.ui.tests_5.0.0.200806171202/resources//preview/
[DIR]  ftp://ftp.inescn.pt/pub/util/.+eclipse/technology/linuxtools/N200904221802/eclipse/plugins/org.eclipse.cdt.ui.tests/resources/formatter/preview/
[DIR]  ftp://ftp.nnz.ru/pub/ipc/reklama/preview/
[DIR]  ftp://ftp.inescn.pt/pub/util/.+eclipse/technology/linuxtools/N200904221802/testing/target/eclipse/dropins/cdt/eclipse/plugins/org.eclipse.cdt.ui./preview/
[DIR]  ftp://ftp.uni-koeln.de/tex/macros/latex/contrib/preview/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.2/en/os/ia64/preview/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/en/os/alpha/preview/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/en/os/i386/preview/
[DIR]  ftp://ftp.uni-koeln.de/mirrors/redhat.com/redhat/linux/7.0/ja/os/i386/preview/
[DIR]  ftp://ftp.cs.uregina.ca/pub/class/170/pre-071/sun_tutor/post1.0/preview/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/latex/dante/macros/latex/contrib/preview/
[DIR]  ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo-portage/gnustep-apps/preview/
[DIR]  ftp://ftp.fas.sfu.ca/pub/math/pub/lachlan/latex/preview/
[DIR]  ftp://ftp.swin.edu.au/gentoo-portage/gnustep-apps/preview/
[DIR]  ftp://ftp.swin.edu.au/freebsd/development/FreeBSD-CVS/ports/graphics/preview/
[DIR]  ftp://ftp.mgts.by/pub/gentoo/gentoo-portage/gnustep-apps/preview/