I dunno about the Philippines, but I do know that user preferences in the Eastern hemisphere are very different from those in the West. And if you are developing for a Western audience, you may very well be in the wrong place.
I assume they are american expats...
... or maybe they are developing a product for the 5/6th of the world that isn't America.
I presented to a bunch of devs 2 months ago, and despite being senior IT developers, they never heard of digg or delicious. It's not a big deal, but it's hard to get your point across.