iLiad allows third party software so its functionality is expandable.

Things you can do with your iLiad
There are a lot of new users, and people who don’t venture into the developers forum much, so I wanted to make a list of things you can do with your iLiad that people may or may not be aware of. This can be a running list that will include functions from the factory, and 3rd party modifications. Feel free to contribute to this thread. Discussions about the functions should take place in the linked threads.

1. Reading
1. Formats you can read
* PDF
1. Zoom in and out of PDF’s. Allows you to view documents not formatted for the iLiad’s screen
2. View PDF’s in Portrait and Landscape mode. Also helps viewing documents
3. Follow Hyperlinks and move back and forward
4. Scribble on any PDF document. You can later merge the scribbles on your desktop.
5. Bookmark specific pages inside a PDF.
6. Automatically zoom and browse PDF’s that are in column format. Helpful for technical articles.
7. Use gestures to perform various functions inside a PDF.
8. Read in full screen, without the bottom tool bar.
* Mobipocket
1. Read DRM protected and non DRM’ed Mobipocket books.
2. Increase the font size of text within a mobipocket book.
3. Look up words in a dictionary while you’re reading.
4. Browse a book by the table of contents
* HTML
* TXT
* Unencrypted LIT files.
* Microsoft Word documents, RTF documents
* Microsoft Excel Files
2. Supported by FBReader (Registry Installer)

1. Increase and decrease font size
2. Read in Full Screen mode
3. Have a clock displayed on the screen while reading
4. Search within a document
5. Browse table of contents
6. Organize a Book library

* RTF
* CHM
* OEB
* OPF
* FB2
* TCR
2. Other Media
* JPG
* PNG
* BMP
* 2 Audio Playing Applictions Support: Content Lister Based & Graphical Application
o MP3
o OGG
o WAV
o MOD
3. Internet Connectivity
* Surf the Web using Dillo or Minimo
* Download new comics daily.
4. Play Games
* Chess
* Mahjongg
* Interactive Fiction
* Sudoku. Also available at Feedbooks.com
* GnuGo (in text mode)
5. For Developers and Linux geeks
* Open a terminal on the iLiad
* Install an SSH server and have it automatically started at boot
* Browse the file system on the iLiad and move files around.
* Use the iLiad as a Wacom tablet on your Linux computer.
6. Security store your passwords and keep them updated with your PC, Mac, or other mobile devices.
7. Keep a Calender, Contacts, and Todo List on the iLiad.
8. Edit simple text files and programming source code.
9. Connect a USB Keyboard to your iLiad
10. Use as a Compact Flash and MMC/SD card reader for your PC.
11. Automatically download and upload files to and from your networked Windows computer with the companion software. (On Mac’s and Linux PC’s with Samba too).
12. Take screenshots of running programs on the iLiad.

Only would I not put too much weight to either device’s wifi live connectivity (surely no breaking point as both can connect to home & they can both carry enough storage on memory devices) or the 60.000 : 90.000 ebooks (a pointless comparison) that can be read.

“Once you find your book on Amazon, you can download it in under a minute as long as you are in a wireless coverage area. Not so with the Sony – you sync-up in a WiFi “hot spot” and download your content from the internet.”