Using Presentations as Participation Aids
There is no rubric yet that tackles the use of digital visual presentations (Powerpoint, Keynote etc.) as participation aids in the liturgy.
The principle for me is simple. Yes, simple. The simpler the presentation, the more elegant, and the more it can lead the people to focus more on the liturgical celebration.
The overabundance of graphics and animations turn people's attention to the presentation itself which then defeats its purpose of directing them to the become involved liturgy. Simpler, well-selected graphics look more elegant. Slide transitions like fade and dissolve are also easier to do and make the presentation run smoother.
As in every good liturgy, prudence and restraint, with a little subdued artistry, go a long way.
Here are a few samples:
If you noticed, the key elements are borrowed from or transferred to the poster/invitation to provide visual coherence to the whole event.