after a while discovering/exploring and training with tools making vids, slideshows, pics etc., i found some time also to inspect things about that leaderboard.
there has been a discussion in the beginning of the topic, where the question was, what should count and what not.
i do not really know, if it is answered complete or what is implemented, except this i have seen:
and some other posts from kaya, when someting was changed to improve the ranking.
and this:
i agree 
just one thing, that is perhaps also something to think about (if it is not allready?) to answer the question, what should count and what not.
i have seen in some topics kind of private chats between 3 to 5 uses postings short comments, answer each other, making jokes and get 1 to 5 positiv reactions like 
on allmost each of it.
so you can also create 200 posts with a few hundred positiv reaction a day.
btw:
in the beginning of my ‘member-time’ here, i wrote this in the chat-tool (testing chat):
if some of you are nerved, because i click so much posts…i just thought, i go back to the posts that i enjoyd in the time, before i had an account here, and just say thank you for that. 
just want to apologize again to them, who have been nerved that day 
and the private chat thing get’s even faster…