Mark has my permission to post book content in the Library sub-forum. It's what the Library section is for.
By posting there, it makes the materials available to all Catholics who ever visit the forum. Plus I can peruse them to add to my AI eventually.
The only downside is filling up the sidebar -- but even that is only temporary. There is a "Recent Topics" link in the sidebar, with many more topics listed, so you can scroll past the Library ones.
And of course you can browse your favorite sub-forums and peruse topics that way.
That having been said, it's true I do use the main sidebar myself -- it's the main way I browse CI actually. So I hear you.