I have an iPod Touch, and I've ended up using it a GREAT deal more than I ever thought I would.
Two unexpected uses of my iPod have been:
1. Free, very comprehensive foreign language dictionaries (Which can be quite expensive) and
2. Instapaper. Instapaper is a program that takes articles you find on the internet and sends them to your iPod or iPhone as text (With maybe a couple of pictures). Because an iPod lacks a constant internet connection, this is a great way to read interesting material found on the internet when on-the-go. Since I've begun using it, Instapaper has become my preferred means of reading internet articles.
But what if I find something that I want to remember? How does this application relate to Supermemo? The answer is the useful screenshot function in the iPod and iPhone. To take a picture of your iPod's screen, press the Home button and the power button at the same time. You will see a flash and hear a camera shutter sound. Whatever was being displayed on the screen is now a picture, and those pictures can be accessed using the "Photos" app.
So here is how knowledge "flows" from the internet into Supermemo:
1. Find interesting article
2. Send to Instapaper
3. While reading on my iPod, take a picture of an interesting passage, statement, etc.
4. Periodically go through my photos and enter the valuable information into Supermemo
Thus, even when you're out and have a few minutes of free time, you can do some learning which will ultimately go in Supermemo (Just make sure you don't use it while watching a sunset, talking to a loved one, or during any other inappropriate occasion). The reason I post this now is because: 1. I'm a huge fan of Instapaper, and 2. Instapaper is going to be a launch application for the new iPad. Such an application could help rationalize an iPad purchase as an "educational expense" if I tried hard enough to convince myself.