BTW, Nook Touch owners at MobileRead have continued to play with the browser, and one reported that:
The web browser is somewhat buggy, which is probably why they didn't release it, but it's faster and nicer than the K3 browser.
If you tap the upper-right corner that looks like an outline, you get a series of menus for various settings, including a Recent Downloads page...
I got a Notification in the title bar that a .pdf had downloaded, and it appears in the Downloads list, but I cannot locate the downloaded file.
So it looks like it won't be good for downloading ebooks, alas.