Interactive design (IxD) is study the interaction between the user and the designed target. Nowadays, it is most about the computer user interface, device specific screen elements… In its broadest sense, it also includes the artificial environment in which human interacts with its compounds.
However, people does not usually think data presentation is IxD. The reason is obvious that human readable data has been presented in tabular printed page or webpage. Yet, the presentation is fixed in time. It is not so much the case with computer power increases, computer applications or webpage. The very simple example is that a list of item sorted by its attributes by simply a click of its attribute name. The items can be viewed in terms of date created or alphabetical order or so on. Another example is visualizing data in map. It was very powerful presentation.
iDisk replacement
You can treat DropBox as a regular folder for any file. Then the program does the rest- sync all the content with the server – hence the files are accessible everywhere, by different browser, any platforms including iPhone.
The biggest difference conceptually is that Dropbox is a folder and iDisk is an connected disk. Hence, there is no copying to create a new copy and no extra effort to take care multiple copies. iDisk in the old Mac is the pain in the ass. Even Copy small files leave the progress bar windows stay open for while, the larger the file the longer it stay open. Dropbox is no different than any moving action in the Finder. You move a file to Dropbox folder. It syncs in the background and he folder or file displayed with a small syncing arrows on the lower left corner. A blue tick when complete, very clear.
Most importantly, iDisk has left me too many times without a file when accessing the file in different computer. The syncing sucks in iDisk but it never happens in Dropbox, at least not yet. Best of all, Dropbox is free for the first 2 GB. Apple should seriously consider to buy the company and replace with it’s aging and annoying iDisk.