Digital Exhibits: Display and Format Challenges

As part of a work project, I recently spent some time scrolling through a variety of digital exhibits created by heritage organizations.  My goal while looking at these online exhibits was to compile a list of functions and visual characteristics which comprise a 'good' online exhibit.   I'm not sure my efforts resulted in an ultimate list, but I did come a few digital exhibit techniques I liked and a lot I that found verging on horrible.

Common Online Exhibit Problems:

• Poor flow of information and the user is left unsure of how to navigate information.
• Way too much text.  Most curators often refrain from including an overload of text in a physical exhibit, but it seems like this practice is often ignored in digital exhibits. 
• Overuse of flash or other elements which take a long time to load (even on highspeed).

Digital Exhibit Elements That Work:

• Combining mediums and using the digital space to display video, audio, and photographic material from a collection. 
• Facilitating hyperlinking to the online collection descriptions so users can learn more about an item. 
• User choice is integrated into the design.  For example, the user is able to decide which part or items of the exhibit they wish to look at and in which order. 
• Exhibit theme (colours, images, etc) allows the image to stand apart from the rest of the institution's website.

What makes a good digital exhibit? What is your favourite virtual exhibit?