Q. I find this new system to be less precise than the system it replaced. I am also constantly asked to sign in, even though I have already done so. Most frustratingly, I encounter a large number of links that go nowhere or ask me yet again to sign in only to return an error message. The new system also seems to offer more information such as tables of contents, but more often than not these promised links lead to an Amazon page without a table of content. Another related problem has been the promise of downloadable ebooks.