This is embarrassing. Just when I thought Russians and Indonesians were the most active forum users, and here are my fellow countrymen; proactive in joining bounties. Some of them didn't even bother to post on our local board.
I checked the recent posts of each accounts that joined GCOX and I was surprised that they didn't post a single reply in the local board. The posts are located in Announcement, Bounties, Altcoin Discussion, and Bitcoin Discussion. If you're a truly newbie in this forum, the first board you will check is the Local board to ask some things to your fellow citizens unless you have a great knowledge about crypto. Sadly, some posts are not good.
Signature participants from #6 to #45, and #59 to #74 might be calling their friends or relatives.

Or maybe a single user built an army. That campaign needs an eye of the hawk, and I hope coinlocket$ will investigate it.
And I'm pretty sure that the Senator didn't summon or call his fellow citizens to join that bounty.
It's true that the Senator didn't promote GCOX for the Filipinos to join the bounty. I think the reason why there are so many Filipinos on that campaign is to have a great assurance for the income. Every bounty hunters have a mindset of securing the profit they will gain right?
Then I just realized, why are some people always pointing out that the race is just a full of bounty hunters? If there's a problem regarding about the bounty hunting you can easily report them. There's a reputation section, you can post all the multiple accounts you will found. It's a common issue, that's why I only stated the reason why there are so many Filipinos in the GCOX since the OP's point is about that.