iframe content

iframe content crowling

[fedefinki]

I have a site lets call it a.com that has an iframe pointing to a subdomain of a.com, lets call it b.a.com.
as far as i know a subdomain is treated as a totally different domain.
i also know that the content of the iframe is not considered to be the content of the site containing that iframe, that is totally logical, for example if a create an ifram on my site pointing to webmasterworld.com my site will not be crawled as if it where my content because its not the content of my site, its just an iframe pointing to an other site.
BUT.
In my case i have site a.com and b.a.com which are totally different sites from the domain point of view, but both are hosted on the same server and i have access to both.
besides that the directory tree on my server goes like this:
a.com(dir) -> index.html
a.com(dir) -> b.a.com(dir) -> index.html
so in this case site a.com is the owner of the content on site b.a.com and it is displaying it.
Is there any way to tell search engines that this is the scenario, and make the SE crawl the content on site b.a.com like if it belongs to site a.com, which it does BTW.

[tangor]

Have to ask... if it is on the same domain why use an iframe? Search Engines are getting better at reading iframes, but that is still not perfect (maybe in the future, but not now). Is the content related? If so, why not one domain? Just asking. I prefer the K.I.S.S. method of webmastering.

[fedefinki]

yes, you are right, this is a special case, cause if it is in the same domain why to use an iframe, well, i had to add a custom application made by someone else to my already finished site, so the best and easy solution to embed this app to my site was to use an iframe, just of the idea of trying to merge the app with my site i get dizzy.
and yes it is very content related, that's why i don't want to lose all that content the app is providing for SEO

[tangor]

I'm the wrong guy to ask. Game playing I don't do. My content is served straight up like two fingers of Bourbon, no ice. SEO games I don't play either. Those games come back to bite your arse every time. You do have a valid question and have, apparently, popped bucks for an app. Without a use/need (describe in general terms) as to the goal for such I'll bow out. SE's see domain and sub/domain the same way, in general, but iframes get in the way. (I don't like iframes, and as a NoScript user on the web I don't see most iframes anyway... keep that in mind).