I realize now the way the mod is set-up that it is meant to be the person who originated the similar topic, not the person who last posted, which shows up. I just removed the name of the person who originated the thread as I don't think that information adds much on my particular sites.
It'd be nice if it had the date of the last time someone posted to the related thread, but that's such a minor thing.
I think that I'm getting significantly more page views on my site already as a result of this mod.
I love the work the phpbb-seo team has done. As someone who is very particular about my site's seo, this software has been awesome.