Currently both Campaigns and particular Programs feature some easy stats, which is super-cool. However, what the stats precisely show is not that clear from the context. Say, you're accessing a Campaign page and see that the users added 382K words. Is it during the programs' time? Since the first program in that campaign started? Last year? This year? Same for viewership statistics.

This could be solved by adding a simple tooltip info, similar to the one that is already there for the number of editors and the number of files uploaded to Commons.