I like Trepnetwork - we read a lot of the same blogs I see.

The Marine classifieds idea sounds interesting. I'm sure that a site built directly to military members' needs would be far different than general sites like Craigslist, and so could develop a strong following in the military ranks.

Out of curiosity, where all have you traveled besides Okinawa through the Marine Corps? I really enjoy traveling but don't get to do it that often.