We are developing an app for the Jomsocial part of our site. We want to have a different domain name and different template and only Jomsocial compared to our original site. We want it where if someone posts on either site that the post will also be on the other. Is this possible with this extension? Do I need this extension to do it or can I just create the new site and rename the database to my current one? Thanks for any help.

The concept of JMS is based on the sharing.
- Sharing of the same Joomla application (php code)
- Sharing of the content of a limited number of extensions (DB content).
See the list of extensions that are currently defined in the JMS Tools menu and also the one that can have their content shared.
www.jms2win.com/en/list-of-extensions?vi...id=269&Itemid=53

JomSocial is an extension that can have its content shared.
The sharing of the content of an extension consists in the sharing of the MySQL tables used by this extension.
In other words, the record (data) are unique and not duplicated (as they are shared by MySQL)

It is also possible to share the content of JomSocial between different DBs.
Remark: This share the whole content of JomSocial.

If you want a partial sharing of the JomSocial, this is not possible.
Doing such partial sharing require that the author modify their code to provde for example group of users per websites or event or community, ...

If you need such partial sharing, today, you have EasySocial that implemented such kind of partial sharing when JMS is present.
So that, you can create subset of users depending on the website.

JMS Basic is enought to do that.

I want the same Jomsocial content and users but a different template and Joomla installation. My main issue now is when someone signs up with the app I want them to get an email from that site and not the main site. If they sign up on the main site then they get the main site email. Will JMS allow for that?

No problem with JMS to have websites with different look (joomla template).
See for example www.jms2win.com and meeting2win.com
There are 2 differents domains with different look.
Both are slave sites and sharing the users.

See also www.mywebsite2win.com that is a portal with several slave site with different look.

When a user create an account in a website, the confirmation email is generally sent using the infos of the website where it is created.
I think this is also the case of JomSocial that use the "configuration.php" mail info for sending the confirmation email.
If not, for your information, it is possible to share JomSocial except its configuration. So if the "sender email" address is located in the JomSocial configuration, you can have different one.

What you are describing is NOT really related to JMS but related on the place where JomSocial reads the "sender email" to the signup.

JMS does NOT touch to the way that the extension are working.

Sounds like exactly what we need! A fresh Joomla install on the slave site is fine as well then as long as it has the same Jomsocial software?

To share the content of an extension this is done at the moment that the website is copied.
Instead of copy a MySQL table, we create a link of on the MySQL table.
Therefore, the sharing is an operation that is only done when duplicating a website and not while creating a fresh slave site that by definition (fresh) is disconnected from the other site.