Every phpVMS install can be linked to a central stage - bringing everyone's profits, finances, passengers, loads, all into account, to a central area for ranks and more, to build a virtual airline industry. There are rankings based on flights and financials and pilots, eventually leading to virtual stocks and market worth.
This will hopefully bring about some real, tangible competition, and some consolidation of everything that's out there. Several VAs are testing and whatnot.
The site is:
http://www.vacentral.net