Just a week ago I sold multiple bitcoins with rebit.ph, which is also from sci.ph, so they seem pretty trusted.
Cool new service. TBH I prefer to just pay those bills with cash, especially if there is a 30PHP fee for each bill (+ those companies happen to be very close to my house.) But very cool that you guys keep making new services for the Bitcoin PH community!
Would be probably good to have 1 account across most of your websites (at least like rebit, coinage and bills.ninja - I don't care so much about bitstars :X

) Even though that is technically a little bit more difficult.