Filed under: CellphonesBeing that the T-Mobile G1 launched officially today in the US of A, it makes sense that the phone's marketplace for applications would open its doors as well. A recent post over at the Android Developers Blog has affirmed that users can now indulge in over 50 apps, and moreover, it has laid out details surrounding the process for getting your own app in there. Beginning on Monday, prospective devs will be forced to "register and pay a one time $25 application fe