Although it is probably wiser to leave it at what Tommi said, I do like to add one more thing: there are quite a few comments that suggest one has to show work before contributions are taken seriously. I don't think it is very relevant if you show your work or not. Einion used to bring in-depth info about colour theory which is inherently 'theoretical'; that doesn't make it less valuable, and seeing (judging?) his work is not required to decide if you take the info on-board or not.
Suggesting that one should show own work before being taken seriously may keep quite a few passive PF members from contributing actively. There are different ways to contribute, showing own work is just one of them.
Besides, Einion actually did show his work: responding to other such comments he pointed out that his various avatar pictures were of his work. Top notch work in my opinion.
I hope Tommi's email gets a response, and that nothing serious is behind Einions absence.
Cheers,
Adrian