Great catch. I’ve added a link to both Steam and GOG on the Links Page based on your post.
I believe the late Sierra collections are available on Steam and it looks like GOG is going to be rolling out more of the Sierra collection (some stuff was already out there – Impressions games I believe). The digital distribution networks seem to be the wave of the future. If it makes great games available again, more power to them. I think I’ll likely be forking over the $5.99 and giving the GK download a test drive today 🙂