The full text of SICP from MIT Press
www-mitpress.mit.edu
www-mitpress.mit.edu
So yes, I would say it does have to get posted every week :-).
It's had the #1 PageRank for "SICP" for years.
Closing the div would actually just mark all the pinned items currently in it as done-with for you, so any newly pinned items would still appear. If you closed the div when you didn't mean to, you could also check the new "pinned" section on the top banner, which would display all pinned links regardless of done-with status.
If you were really interested in SICP, then you probably would have already found this link. It's the 2nd result on Google for "SICP". A blog post on the merits of SICP would be more useful.
Submissions like this are only useful for people too unmotivated to Google for "SICP".
http://news.ycombinator.com/item?id=240628
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