Originally posted by far-trader:
Now if on the other hand the X-Boat network is primarily (as seems the intent from the early descriptions I think) the way of disseminating official information then it's easy to see the government allowing a limited amount of civilian content for those few wealthy or notable Travellers (i.e. those with TAS membership mostly).
IMTU, the IISS Commo Branch prioritizes its meassages: (1) official Imperium communications, (2) TNS bulletins (a sweetheart deal between the TAS and the IISS that is bitterly opposed by erstwhile competitors in the media business), and (3) private messages and goods in whatever space is left over in the data banks and cargo hold.
Since the amount of private traffic cannot be served by the x-boat network, this opens up plenty of opportunities for small courier services as well as the mail contracts that are part of the bread-and-butter of fat traders. I would also hazard that a fair amount of the cargo that free traders find waiting for them in various starports, travelling a jump or two away, is small packages consolidated by a delivery service middleman.
In addition to the aforementioned small courier services, there are also competitive x-boat networks as well, such as those of GIINN, the Gateway Interstellar Independent News Network. GIINN operates its own x-boats and couriers for the purpose of scooping TNS on major stories of general interest (which means the more sensational the better, of course). GIINN purchases used x-boats and scout/couriers from the IISS to operate its own system throughout the sector - and if you can think of a more harrowing proposition than piloting a surplused x-boat, I'd love to hear it!
(Y'know, this would actually be a great application for
j-torps...hey, put down that stick...!)
As far as the original question goes, IMTU the Solomani use the ConNav, the Hivers use courier ships, the K'Kree rely primarily on commercial and private ship traffic (there's no need for a specialized service for this since information sharing is part of the herd instinct), the Vargr have sixteen or twenty or some such different methods (the number is constantly changing), and the Zhos...well, that's classified...
The Aslan? Since all of my game is on the opposite side of the Imperium, I haven't given the hyperkitties much thought - I'm open to suggestions.