Girls won't mind if you are not living in Indonesia and if you are older than them.
➝ Between 500-1000 Indonesian girls online at any time, but thousands more who were active in the past week or month (you have filters to do that).
It still has a large number of users though: I checked on 15 December 2016 at 7pm and there were 522 women online in Jakarta (vs 537 on Indonesian Cupid). Badoo attracts 99,9% of Indonesian girls, from all background.
Ideal for arranging dates prior to visiting the country.
Depending on which website or which app you use, you can pretty much chat with any type of women you could think of: Students, employees, executives, single mom, etc from any ethnicity or religion.
There is such a diversity that it would be hard to generalize.
I once wrote a review about dating Indonesian girls and where to meet them.
You can still read it here: Where to meet Indonesian girls?