Adobe Reader has some great features - such as inserting a signature or filling in forms. However, when sharing out completed forms or PDFs with annotations, the notes do not appear. It seems as though this is best used if annotating and then printing.
There is now an app to support subscriptions to Audible.com - to support readers who need audiobooks, or for those who prefer to listen - the full library is now accessible from iPad with a subscription.
This app allows you to have full text-to-speech capabilities with eBooks on your iPad. Any book in the public domain can be read and listened to in one app.
If you are looking for a way to read lots of blogs and web sites from your iPad or iPhone, Google Currents could help. It is an RSS reader that saves content for off-line reading.
Great FREE reading app for pre-school/early readers. Students work through puzzles and games for each letter of the alphabet and build their vocabulary.
"FreeSpeech is a communication tool based upon research in augmentative and alternative communication (AAC) and human-computer interaction, as well clinical insight and expertise in speech and communication disorders." This free app could also be used to support early readers.
This is an interesting take on eBooks for pre-school children. Though not free, the app includes audio books, games, and the ability to send a custom report on the students' progress.