Sometimes our regular posters just fall off the radar screen for no apparant reason we are aware of. In some cases, folks just tire of the site or become focused on other more personal forms of social media. Some folks are stricken by personal crisis. Some disappear for years and then suddenly return to posting, only to vanish again. Others are rubbed wrong by a thread and simply don't come back.
Some of these posters I sincerely miss as I have fished with them and regard them to be gentlemen. They have just moved on for whatever reason. Some of them I keep in touch with outside of our forum, others have just disappeared and I assume they don't wish to be found.
Not saying any of these are the case with Gfen, just merely that this is the reality of our online community.