I've found two imdb sites :Picking up on just one small part of your post.and I don't see a lot of asian users (very few votes for local films
I've noticed this a lot. Bollywood films get a lot of votes but when it comes to Japanese films (probably others too but I focus more on Japanese films) they often have very few. When films are released in Japan, months before they get a release abroad, they get very few votes. It doesn't seem like there are a lot of Japanese voters on IMBb The only films that ever get a lot of votes are ones that are more well known in the English-speaking countries. Even a lot of Ozu films have under 1000 votes or at least did until recently.
When I made Japanese lists on iCM I noticed how few votes there were in general. It seems like the votes are concentrated on the bigger films by Kurosawa and others. Mizoguchi, Ozu, Naruse etc. generally struggle for votes. Even the Ningen no Joken trilogy had only about 800 votes until the last few months.
I don't really have a big point here or a complaint. Just something I've noticed when I've been watching Japanese films. Compared to a lot of other big film countries, they have a very low number of votes.
With some internet tools, it's easy to know who are the visitors for a specific site:
In Japan, imdb is ranked 471st. In the world, imdb is 39th. So these domestic sites are certainly well ranked.
movie.goo.ne.jp : Estimate Daily Visitors 3,889,947
pia.co.jp : Estimate Daily Visitors 55,231
Imdb Estimate Daily Visitors 10,503,333
(so 10 millions worldwide for imdb, and 4m worldwide/japan for goo.ne.jp...)
It explains why there's no japaneses on imdb. Too bad for us.
In France, imdb is only 165th because of allocine.fr: 27th site in France (Estimate Daily Visitors 654,673).
The "palm" goes to Roumania where imdb is the 11th site.
It's true that India is well represented on imdb : the site is the 27th site.
Stats for icheckmovies :
Venezuela 23.60% visitors?!
5100-10400 Daily Visitors
GEO Location: in Netherlands