FWIW, the
DVC mods prefer to keep the pinned (formerly known as sticky) threads to a minimum. Some of the non-DVC DIS Boards have so many pinned threads that you have to scroll almost to the bottom of the first page to get to the recent activity. We don't want that for our DVC boards (especially because many access the DIS via phone or tablet). We would rather not be making value judgments about which threads are "worthy" of a pin.
Many of the regular DIS DVC posters have the availability posts by drusba and skier_pete bookmarked. The "regulars" have been very generous in posting links (with a credit) to those posts as well as also commenting on the specific questions by the OP asking about availability. I know we are all very grateful for the time and effort those two posters in particular have given our community to provide the information in those "bookmarked" posts.