The Gallery Moderators take Sundays off from approving, so yours won't actually show up until either very late tonight or tomorrow. The ones that you see actually showing up right now fall into one of the following categories - SCS admin, moderators, Dirty girls past and present, and members of the fan club - these people have direct uploads that don't have to be approved.
We are a complete volunteer crew and the gallery is staffed approximately 18 hours per day during the week - we get to approvals as fast as possible, but life does happen.
If you have any other questions, please feel free to ask!