Does this mean MightySites supports administration of multiple Joomla! versions (v2.5 and v3.1) from a single 'master' installation?

Assign all site-specific articles into single category, i.e. 'Site A News'.

Next in Site A create a new menu item 'Category Blog' type and configure it to display articles from this category.

You need to additionally backup and restore databases of all sites, if you don't only use single database for all sites.

... sharing the same property database so I dont need to replicate properties, this is an option however. That's possible, you also need to use single hosting account for all sites, so files (images) will be also shared. Please email this component to alterbrains at gmail dot com, we need to ...

1. You can safely install MightySites in current main site, it won't be changed. 2. MightySites can help you to run all these sites from single hosting account of main site, so all sites will have same files. All subsites should be parked domains for main site. You will be able to quickly ...

... Yes, that's possible, you will have a main site with own hosting account, all other domains will be parked domains, so all sites will use single hosting account (so same files). All sites will use same database tables, so contents will be exactly same in all sites, but MighySites will ...

Yes, MightySites can allow you to run all these slave template sites on a single Joomla installation of master site. Each slave site can use own database.

You master site can have links to all slave sites with templates.

Yes, single Joomla installation is better for you, in this case all files including images will be also shared, so you won't have problems with avatars. Note that MightySites shares database data only, not images. Using different ...

MightySites doesn't allow sites in folders if you want to run them in single Joomla installation: http://www.website.com/database1 is not possible database1.website.com is fine If http://www.website.com/database1 uses own Joomla installation - that's fine. ...

1) Yes, and I can recommend to use single Joomla installation for all sites, so facilities sites will be parked domains for main site. 2) Yes, easy: you create a parked domain in your hosting panel first, next create a new site in MightySites ...