developed by Directmedia Publishing for earlier publications; it ran on Windows and Mac OS X (and now also on Linux). The Wikipedia articles had to be converted to the XML format used by Digibib. To produce the CD, a dump of the live Wikipedia had been copied to a separate server, where a team of 70 Wikipedians vetted the material, deleting nonsense articles and obvious copyright violations. Questionable articles were added to a special list, to be reviewed later. The final CD contained 132,000 articles and 1,200 images. The ISO image was distributed for free via eMule and BitTorrent. In December, the CHIP computer magazine placed the Wikipedia data on the DVD that it distributes with every issue. The Wikipedia materials are published under GFDL while the Digibib software may only be copied for non-commercial use, except the Linux version which is GPLed. CD/DVD April 2005 A new release of Wikipedia content was published by Directmedia on 6 April 2005. This package consisted of a 2.7 GB DVD and a separate bootable CDROM (running a version of Linux with Firefox). The CDROM did not contain all the data, but was included to accommodate users without DVD-drives. The DVD used Directmedia's Digibib software and article format; everything could be installed to a hard drive. In addition, the DVD contained an HTML tree, as well as Wikipedia articles formatted for use with PDAs (specifically, the Mobipocket and TomeRaider formats). The production of the DVD motivated the Personendaten project (see above). The vetting process was similar to the one for the CD described above and took place on a separate MediaWiki server. The process took about a week and involved 33 Wikipedians, communicating on IRC. To prevent duplication of work, editors would protect every article that they had reviewed; links to protected articles were shown in green. Lists of potential spammed or vandalized articles had been produced ahead of time with SQL queries. Unacceptable articles were simply deleted on the spot. While the XML articles for the earlier CD version had been produced from HTML, this time a script was used to convert Wiki markup directly to the Digibib format. The final DVD contained about 205,000 articles, with every article linking to a list of contributors. Directmedia sold 30,000 DVDs, at €9.90 each. This price included 16% taxes and a one-euro donation to Wikimedia Deutschland; production costs were about €2. The DVD image