learn what site/forum visitors are searching for? (no replies)

Hi Friends,
I've been thinking that it might be helpful to learn what my site/forum visitors are searching for, when they use the forum search. The forum (SMF with Tiny Portal) software doesn't provide any such functionality. But I was browsing through my Piwik installation, after upgrading to 2.3, and noticed the Actions plugin, which sounds like it might work.

The description says:

Quote
Reports about the page views, the outlinks and downloads. Outlinks and Downloads tracking is automatic! You can also track your internal website's Search Engine.

Before I go on, does "....track your internal website's Search Engine" mean that I can learn what my visitors are searching for (when they use the forum search)? Or am I misunderstanding?

If that's what it does mean, how do I set it up? It shows as Activated. But I haven't found any widget. I've searched the User Guide and FAQs, but can't find much info about plugins in general, at all, and nothing about specific plugins. Well, I found plenty of info about how to write new plugins, but I just don't have those skills.

If that's not what it means....is there any way to learn what members and visitors are searching for, when they use the forum search feature, using PIwik?

Thanks for your help!