It's more or less that, the about section answers this. It's parsing popular repo that has been active in the last 2 years. It's a long period but otherwise the

It's more or less that, the about section answers this. It's parsing popular repo that has been active in the last 2 years. It's a long period but otherwise the trend would move too much that would make them useless and a lot of popular repo are not maintained or don't need regular update