text: Russia doesn't have same mappers density as Germany. It is much lower even in european part of the country. So there are huge chunks of country that dont have any local mappers. It is especially true in siberia. Because of that we have quite a lot of old notes. It is a little bit sad that we dont have resources to fix this faster but as a community we are slowly but steadily reducing amount of open notes. Outside of big cities surprisingly high percentage of very old notes are still relevant. I am personally added information from few notes that were more than 8 years old today and yesterday. 
  
  Here are examples of people adding data from old "куст" notes. Less than 6 years but old:
  https://www.openstreetmap.org/note/2091772
  https://www.openstreetmap.org/note/990241
  https://www.openstreetmap.org/note/2543348
  https://www.openstreetmap.org/note/2543381
  