The 'objects' can be rotated, for instance to illustrate a product 'all the way round'. In the 3d graphics you can make interactive hotspots. A typical 3D format is 'QuickTime VR'. Sound and video Sound and video clips can be very appealing and may also contain useful information. However, there are several sound and video formats, and they all require a plug-in to play.
Surveys show that the users give a high priority to immediate response.
The limitation of this approach is the available free temporary disc space on the computer and the amount of time used for downloading. Most of the sound formats can be included in the Quicktime format and played as a video. And there is a risk that the playing will stop if there is not enough space on the disc. The limitation of this approach is the available amount of continuos bandwidth. The limitations are not only caused by modem speed, but also by the workload on the Internet, as all users share the available bandwidth.