today i posted on the ams server a pdf copy of ellen swanson's "mathematics into type". i had earlier mentioned in an answer to this question that it was going to happen, and therefore edited that answer to add the new link. (i also noted the link in a comment on another question.)
the question for which the answer was edited was (legitimately) off-topic, and closed as soon as it was noticed, probably on account of the edited answer. so the information about the file availability will most likely be "lost". since this manual has been mentioned a number of times in this forum, i think the fact that it's now available on line is relevant in an answer, but obviously not in a question. (i'm probably even pushing the limits asking about it here.)
i've grubbed through the listings tagged as [books] and [manuals] (= [documentation] which isn't the same) as well as searching for references to the book itself. nothing else turned up. one posting suggested using chat for a similar purpost, but i suspect that most tex.sx readers aren't regular participants in chat.
so, is there an appropriate way to announce such happenings so that readers of this forum will be informed, and if so, what?