What are some alternatives?
When comparing Air Sharing and Pogoplug, you can also consider the following products
Printer Pro - Print attachments, receipts, documents, web pages from your iPad and iPhone.
AltaMail - A treasure trove of features make AltaMail the best email App for iPad or iPhone for auto reply, auto filing, managing and saving emails, attachments and other files.
CalPrint - CalPrint uses your existing reminders and calendar entries on your iPad or iPhone (Exchange, iCal and Google Calendars etc.
ePrint - If you have the right printer, “ePrint” will let you print directly from your iPhone or iPod touch.
ClipPrinter - opy items from other Apps and transfer to another iPad/iPhone/iPod Touch via Bluetooth/WiFi, or to/from your PC/Mac via WiFi.
NotePrinter - Developers of application solutions for the iPad or iPhone. 'Printing on the iPhone: “There's an App for that” - Print & Share' as featured in Apple's “Office” iPhone commercial