I don't like the fact that I cannot choose to make my page private. GoodReads only allows me partial control of my privacy, Booklikes gives me none.
I don't like the fact that I cannot allow comments from those I choose to allow, without leaving comments open to everyone.
I don't like the fact that while I can customize my page for others, I'm stuck looking at the ugly default graphics.
I may lurk her from time to time to check on GoodReads exiles, otherwise I'll be on GoodReads.