Continuing from yesterday. When we install Linux Operating System, chances are we will be asked whether we want to partition the storage (e.g. harddisk) for swap partition, although sometimes we have to do this manually, depending on the Linux distros that we use. Swap partition (probably comparable to Virtual Memory in Windows) helps to speed up computer processes, and is important if we have low-end computers. Further information about swap partition in Linux can be read here.
Now, let's apply this idea to storage used in mobile devices. Take my O2 Xda IIi PDA Phone, for example. You can't possibly imagine how many times I wish I can upgrade the RAM of this device. Now, imagine I can just plug in a SD/MMC card, run some software and voila, the SD/MMC card will act as a swap partition. That must be sweet! So, the idea here is that the SD/MMC card can act not only as a regular storage, but also as a swap partition. Okay, it may not necessarily be a swap partition. I think a swap file is probably enough, which means you do not have to partition the card. Just a thought.
On an totally unrelated note, that is some gorgeous view you are enjoying in Spain, Sammy :-o