Implementing multi-domains with #WordPress

I’m busy working on an idea, and it keeps growing and evolving each day. I’ll essentially be creating a portal of information, for lack of a better term. For this example lets go with running only 2 TLD domains. Something along the lines of & should work. These are not my domains, but illustrate the example I’m going after.

When the visitor goes to they will be presented with a landing page that has information for that particular region. I live in the province of Alberta, so let’s use that as a reference point. Some of the information will be aggregated information from the category. I live in Calgary, so think of it that way. Now I do say category because I’m that this will all be one WordPress install, with multiple domains. The URL structure would be on the main site. ( What I want to do is have someone that goes to be directed to the /city/another_category/article.html portion, however the resulting URL would appear as ( as it’s own domain.

I’ve explored WordPressMU and I’m not completely sold on it as the solution. I know that it can do domain forwarding with it’s sub-domain settings, but I still don’t believe it will populate correctly.

The other option would be to still have with links to categories, but it would then link off to,,, etc as needed.

The other issue is that each city might not have a domain. So city2 (let’s use Airdrie) might not have a domain. Without it would then be but if they decided to get a domain at some point, I’d want to be able to utilize that. I was initially thinking of simple domain forwarding (i.e. would just resolve to but don’t really feel that’s the best solution for branding and definitely SEO.

Thoughts on this? Am I clear? Am I off my rocker on what I’m trying to do? Does this make any sense at all? Oh, and of course I need a solution basically yesterday. Thanks in advance for your input.

Edit: I just came across Examiner and it’s similar to what I’m looking to do…but NOT what I’m doing, so I still need a solution.

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