I just saw this post (apologies for not responding sooner!) I'll engage our Support folks to see if they've got any metrics for you.
Hi, Amelia. I apologize for the delay. We have always had the option to search our public cases, but it has not always been highlighted on the landing page for this community. We do not have stats, but user feedback about that page and other Jive Support Community documentation has focused positively on their simplicity and ease of use. We try to limit text to purpose, actions, and next steps.
Please let us know if you have any other feedback or suggestions.