Question: How would I merge content (e.g. a forum, with nodes, terms and users) from one Drupal site into another?

Here's my specific use case:

* I have a local site which just contains nodes, terms and users for a forum (these were imported with <http://drupal.org/project/phpbb2drupal> - and before you suggest just using it on my live site, I can't get it to work there, running into the issues described at <http://drupal.org/node/1033316> )
* I have a live site which has no forum, but has its own nodes, terms and users.
* I'd like to merge the local site forum into the live site, adding the forum to the live site.

Answer: 
If it was just for nodes i would say use this:

<http://drupal.org/project/node_export>

As you need to migrate users and taxonomy terms as well I would use this: 

<http://drupal.org/project/migrate>

Although there will be some php OOP coding to do.
You can use below script to dump into your new drupal 7:<http://goo.gl/GPmG9F>