On the .com .org thing...
Now, obviously(?), in the normal run of things .org's are non profit making organisations, whereas .com's or .co.uk's etc are in it for the money.
Some time ago Danny/Captain PPRuNe wisely registered both domain names, so that we'd subsequently retain ownership - and be able to use them accordingly.
As far as you lot are concerned when/if you connect to
www.pprune.com that server redirects you to
www.pprune.org automatically.
Ps. I just did another 'trace route', using NeoTrace, and this morning the connection is now traversing across 22 servers before it finally arrives at
www.pprune.org - and taking an average of 197 thousand's of a second from leaving my machine to arriving in PPRuNe land.