Yes, very easy. All the language strings are in a single language file. You can also install a third party software to make your translation even easier.
Please check https://moosocial.com/wiki/doku.php?id=admin_dashboard:site_manager:languages_manager for more details
Please download it at http://translate.moosocial.com/collaboration and then follow the instructions in the below link to install
It is primarily dependent on the capabilities of your server. On shared hosting, mooSocial be able to support tens of thousands of users, while a single dedicated server can usually support upwards of one hundred thousand however we make no guarantee of performance due to the many variables involved. For each case of servers, we need to analyze to optimize if it problem happened.
Our support team will assist with initial Software installation, general questions related to the script and technical errors encountered during the normal use of unmodified script. We cannot assist with customization of the script.
Yes, you're free to sell your website but not your mooSocial license since the licenses are non-transferable. In other words, if you choose to sell your website which contains a mooSocial license on it, the new owner would need to purchase their own license. What many clients do is simply incorporate the cost of the new license into the sale price of the website and purchase a new license on behalf of the new owner.
This depends on what type of customizations you've made. If you've simply created new files and linked to them from mooSocial, it's unlikely that you will lose any customizations you've made. If you've edited the core code and you overwrite it with the new files from the upgrade package, you may lose your customizations. To avoid this, please make sure you full backup before upgrading, use compare tool to compare and merge changes that you made into the new core code. We do provide upgrading service so that contact us if you’re not sure what you should do.