Hi guys!

First of all, I am sorry to roll such a thread up again.(I know there is a huge discussion going on) In order to keep this post as short as possible i won't quote all the references i have found via search function.

Avoding the whole SEO and funcionallity discussion - I just want keep the question simple:

forum.site.com = Board
site.com = Page 

In more detail:

Is it possible to install IP.4 (the board and all other apps but Pages) to the "/forum" direction and make it fully accessable via a subdomain forums.site.com and have Pages working as homepage for the root site.com? 

How would an article in pages and a topic / post in the board look like URL-wise?

Out of the box, the answer is no.

If you or someone else is good with server redirects and rewrites, I'm sure there is a way to. Whether or not you will need to edit IPS' source code I dunno.