I have a stupid question about having multiple domain names on one hosting account. I've had two domains for a while, one for my personal blog and forum, GalacticCactus, and one for my language blog, Arrant Pedantry. I have a subforum on language at GC, and I think I'd like to link to it from Arrant Pedantry, but I'd like it to look like it's part of Arrant Pedantry, if that makes sense. I know that I can make a theme that applies to a specific subforum, so I can deal with the aesthetic side, but is there a way to make it look like it's on the arrantpedantry.com domain?
That is, if you link to the forum from Arrant Pedantry, can I make it display arrantpedantry.com/forums in the address bar rather than galacticcactus.com/forums? If it helps, my GC blog is in the root of my hosting directory, and the forum and Arrant Pedantry are in subfolders.