] A June 15 conversation laid out a blueprint of the
] network's evolution and survival despite law enforcement
] pressure. An unidentified visitor from Germany counseled
] the Egyptian imam of the Via Quaranta mosque in Milan to
] avoid communicating via the Internet, to speak in code
] with associates and to use messengers. Funding was still
] plentiful, the visitor said.

No information about steganography or porn in this article, but it is a lengthy and apparently well-researched description of the links between different terrorist groups. It also includes mention of the Via Quaranta mosque in Milan, which was rumored to be the center of a raid in which several terrorist computers were captured with large numbers of pornographic images on them. Which doesn't mean that the porn contained secret messages (most porn is, after all, just porn), but it is a story worth following to see if this is where some of the rumors about Al Qaeda and steganography may have started.