A number of users have noticed that LibraryThing mobile (http://www.librarything.com/m/) looked weird on iPhones. We made a few changes and it now looks right.
We are, of course looking at more consequential upgrades. The main issue right now is the lack of an ability to add items to LibraryThing. Anyway, that’s what I want to do—add books while standing at a bookstore, for example.