1. Any name is fine.
2. Should we bring media for everything ? :) We can have a first shot next
month and arrange such events on special occasions if we would like to bring
media in.
3. If we force a theme, I myself will lose interest in participating. The
basic idea is to give a a taste of wiki to new comers and bring back
inactive editors and see what is the maximum potential of a community in a
day.
4. Edit count, number of new articles created should be a good enough
metric. Frankly, I don't bother how we measure as long as we contribute
something good. We can measure the activity across one whole day in UTC so
contributions from people in all time zones will count.
Ravi