MuseScore download statistics: huge growth in the past year
The MuseScore number of downloads have grown from 250 in May 2007 to 2500 in May 2008.
These figures come from SourceForge. It's a pity SF doesn't offer statistics from which countries MuseScore is downloaded most.
Besides the official releases on SF, we have a personal managed account for prereleases. Webalizer tells us that there were more downloads of the prereleases than the official ones.
Most popular downloaded prerelease: r929 with 3708 downloads
Most active downloading countries: Mexico (2419 downloads) and Argentina (1853 downloads)
More details can be found on Google Spreadsheets