You can find the Business Model post here, on the Ma.gnolia wiki, the original version having been published on April 5. No updates follow, and indeed, the most recent update I can find on that wiki was by me, posted on the same date.

The good news is that when one goes to the Ma.gnolia homepage one does find a form for requesting invitations. I'm just wondering if Mr. Halff is starting to run out of steam, which would certainly be understandable, at this point. Then again, maybe he was just out enjoying his summer. One can overanalyse these things.