Another way we might consider keeping track of book suggestions is through a virtual bookshelf. (There are many, and I'm shilling the one for which I already have a good amount of data input.)
Try it out. See if you like it!
And, in case you're wondering, I'm pretty sure I've read more than the measly 100-plus books on my list. Either that, or I've wasted a lot more of my time with movies, TV and the Interwebs than I previously thought!