The electronic versions by Baen are produced in five common formats (HTML, Palm Pilot/Mobipocket/Kindle format, Rocketbook, EPUB/Stanza, Sony LRF, RTF and MS Reader versions), all unencrypted in drastic contrast to the rest of the e-publishing industries strategy. Jim Baen disliked Adobe's portable document format for reading purposes, but Baen Ebooks offers some non-Baen titles in that format. When customers purchases a title from Baen, they can read it online or download in any format they want as often as they want. Baen instituted a parallel practice of using promotional CD-ROMs with permissive copyright licenses containing many of its stable of authors works. Whether downloaded or by CD-ROM, the source material is available in all the formats Baen supports.