http://lists.openstreetmap.org/pipermail/talk/2009-December/045983.html
"It reveals that 95% of the way data is contributed by just 10% of the contributor base. In fact 50% of way data has been contributed by just 31 user accounts although the first few of these are major imports, such as TIGER (32%), AND (2%) and Coastlines."
単純に"way"としてひとくくりでデータ量としてパーセント化されればこうなりますが、別な視点で世界中では様々な"way"や"マッピング作業"があるわけでその「質的な貢献度の解析」も必要と考えます。
