2. Tweetdeck TweetDeck is an Adobe AIR desktop application for Twitter, Facebook, LinkedIn, Google Buzz, Foursquare, and MySpace. Like other Twitter applications it interfaces with the Twitter API to allow users to send and receive tweets and view profiles.
TweetDeck is compatible with several operating systems including Microsoft Windows, Mac OS X and Linux. An iPhone version was released on June 19, 2009 and an iPad version was released in May 2010 as well.
3. iBook from Apple Though iBookstore is only available for customers from US, it is still popular. iBookstore, a good place, you may download books day and night. All purchased and imported ePub books are arranged on a virtual bookshelf inside the app.
4. AccuRadio AccuRadio, a new FREE Internet radio app for the iPhone, iPod touch and iPad, features HUNDREDS of great-sounding, well-programmed music channels - rock, pop, jazz, country, bluegrass, Broadway, reggae, classical music, etc.
5. Wordpress If you want to share whatever you saw during traveling via blog. I think this applicationis easy to manage your WordPress blog from your iPad, iPhone, or iPod touch. With WordPress for iPhone OS, you can moderate comments and create or edit posts and pages with the large 9.7 inch high resolution display. And with a big soft keyboard and faster content management might mean that from now on, you can blog from anywhere and anytime.
6. Evernote Evernote is a free suite of software and services designed for notetaking and archival. And it supports a number of operating system platforms (including Android, iPhone OS, Windows and WebOS), and also offers online synchronization and backup services. Now, with Evernote, iPad could help you remember anything and everything that happens in your life.