joined:Jan 8, 2004
Today, all of the 79 keyword phrases I've been tracking on a daily basis have shot up near the top in Google. The recent "release" of many sites by Google reported a couple of weeks ago gave us a little boost, but today was hugely dramatic. The delay might have been because of our large number of pages (around 60,000).
Old SERPs positions in the several hundreds to not-in-the-top-1,000 are now from #1 to #30 or so.
The sandbox/filter/whatever-you-want-to-call-it effect lasted about 8 months (assuming it doesn't return).