... share articles only, so each site will be able to have different menu items but you will be able to edit all articles from main site. In case of sharing articles and using separate database for each site please ensure that MySLQ user of subsite has access to database of main site.

Added sharing of Tags and Tags references of Joomla  3.1.
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Yes, that's possible.
Second domain should parked on top of main site, so both sites will use same files.
Second site will use own database, but Kunena (and Users - also required) will be loaded from main site, so forum and users data will be always same.

I have an existing Joomla 2.5 site with Kunena forum. I'd like to have a second Joomla 2.5 site at a different domain. The second site should include the same Kunena forum. No other content but the forum should be shared between both of the sites. Is this possible? Also, can I get a copy of the user...

That's not possible because MightySites can share only ALL users.

Sorry, but we don't do custom development.

Hi - the use case I am interested in is as follows: I have a number of sites running jomsocial. I have an international master site and country specific sites. I have a number of profiletypes defined in JSPT. I am hoping to have my sites set up as follows: Master Site - all jomsocial users, groups a...

In order to solve this, I was thinking to have a separate database for each country, but sharing some tables like Users, Categories, and general tables in order to make it possible to install new modules and plugins without manually replicating them to each instance. ...

... reviews, but all of them will share the same Categories. In order to solve this, I was thinking to have a separate database for each country, but sharing some tables like Users, Categories, and general tables in order to make it possible to install new modules and plugins without manually replicating ...

... will be able to add articles in frontend. 4) Each site can either have own database, or use database of other site but have other tables prefix. Sharing actually means that site A loads all articles from site B's database table #__content. So any load or changes to/from this table on any site ...

... articles and menu this is displayed in the business domains. Each business domain has additional content articles so this would be a question of sharing by category or something similar. Thanks Paul