Here is an interesting statistics of Facebook users in Asia which has the latest figures.
An interesting comparison:
Indonesia 19 mill (8% of population)The Bangladesh figure is surprising as the number of active internet users are about 1 million.But one has to count the millions of Bangladeshi diaspora in question. I recon the half of the users are from the diaspora.
Phillipines 10.5 mill (11.5% of population)
India 7 mill (.6% of pop)
Bangladesh 750000 (.5% of Pop)