In my recent experience in submitting my entry for Potograpiyang Pilipino, I found it hard to translate some of my thoughts in Filipino. But that said, it was a fun experience overall. And I don't see anything wrong when users post in vernacular. But yes, for the benefit of the international audience, translations should be provided. I think posting in Filipino makes us appreciate our heritage more, while providing translation makes one's post not alienating. So win-win.^^