I misread the title of this post at Galley Cat as "Lulu Titlescorer Tests Your Blog's Title;" it was book in the original. But by the time I realized it, I had already plugged in "Charlotte's Library" and gotten my results--"The title Charlotte's Library has a 45.6% chance of being a bestselling title!"
EDITED TO ADD: If one considers "Charlotte's Library" to be figurative, my chances jump to 72.5%!!!!
I am encouraged (Twilight only gets a 36% chance) and happy to speak with publishers at any time.
Test your own blog's title here!