Still looking for a good book? Try these sites for ideas.

Bettendorf (Iowa) Public Library's Young Adult Books in Series and Sequels
Searchable by author, series or book title.

GoodReads
Goodreads users recommend books, compare what they are reading, keep track of what they've read and would like to read, find their next favorite book, form book clubs and much more.

LibraryThing BookSuggester
An online service to help people catalog their books easily. Because everyone catalogs together, LibraryThing also connects people with the same books, comes up with suggestions for what to read next, and so forth.

No Flying, No Tights -- Graphic Novel Reviews
Reviews graphic novels and comics that walk the line between teen appeal and more adult content. So, here you will find an array of titles, all of which will certainly appeal to teen readers but are in fact aimed more at an adult audience.

What's Next Database - Book Series
Offered by the Kent District Library (Michigan), the What's Next database helps you search series fiction. Includes adult and teen titles.

YSALA's Book Lists and Book Awards
From the American Library Association's Young Adult Services. Includes Alex Awards, Michael L. Printz Awards, Outstanding Books for the College Bound, among others.