I posted a short test before "Globe Powersurf bucket charging (per MB or data usage) now available for prepaid , how to register" and now, its official, from Globe. Aside from the the usual Powersurf15,30 and 50, they've also added the Powersurf99, 299 and 499 (all 30 days unlimited internet) previously only available for Postpaid subscribers.
Sadly, this is just a promo. Until Dec. 31, 2011 only.
From Globe