Recently, I've been asked questions about Indonesian Internet users. To be frankly, I am also looking for data to analyze. (I am running my own internet crawlers, but they are kind of slow - my students are slacking :)) Most people are using SocialBakers as the source of Facebook and Twitter stats. Here's an example of their Facebook stats.
The thing about Internet in Indonesia is that it grows rapidly. If you search the internet, most of the statistics are kind of old. Have a look at twitter users stats in 2009, for example. (Link to the report is missing. Will put it here.) Indonesia is nowhere to be found. And yet, I believe, today Indonesia is probably in the top 4 of twitter users. (Report from Mediabistro shows that in 2012 Indonesia is in the top 5 twitter users.)
New data / stats are needed.