How big is your to-read shelf?

Isn't LT limited unless you upgrade?  That's why I haven't bothered with it because things like Bookarmy and weRead are unlimited from what I can see.

Yes, you have to upgrade. But it's only $25 for a lifetime membership. Plus, it's bigger and better than any of the other similar sites. I use it every day, so I don't think $25 was much at all!