Penthouse magazine, recently relaunched and now owned by a South Florida investor, has introduced a digital edition. In partnership with Zinio Systems, which specializes in putting print periodicals on the Web, Penthouse is now available for $19.95 for a 12-issue online subscription($5.99 per single issue). The February issue, which was published this week, is the first of Penthouse's digital editions. The Zinio versions of Penthouse are complete and include all ads seen in the print version. Originally launched by the legendary Bob Guccione, Penthouse's assets were sold when the magazine ran into serious financial problems and could no longer be operated by Guccione's company.