Hello -- first off, thank you very much for this very handy extension -- I use it all the time!
My question is whether Sourcer can be refreshed via AJAX, this way the code within can reflect any informational changes without having to reload the entire page. I appreciate any thoughts you might have!
There is no AJAX functionality built in to Sourcerer.
Sourcerer simply interprets and outputs the code you give it.
You can of course place code via Sourcerer that will load content via AJAX. But that is fully down to your specific custom code.