I seem to be struggling with the same issue. Here's the code and output that I'm getting when I use the MTPings tags:
CODE
<strong>Posts Lists</strong><br />
<MTCategories show_empty="1">
<strong>Posts from - <$MTCategoryLabel$></strong><br />
<MTPings category="<$MTCategoryLabel$>" lastn="10">
• <a href="<$MTPingURL$>"><$MTPingTitle$></a><br />
</MTPings>
<em>Ping: <$MTCategoryTrackbackLink$></em><br />
</MTCategories>
and my output looks like:
CODE
Posts Lists
Posts from - Derek
" lastn="10"> • Social Networking
" lastn="10"> • Update to Fed Help
Ping: http://[url]/mt/mt-tb.cgi/152
Posts from - Eric
" lastn="10"> • Social Networking
" lastn="10"> • Update to Fed Help
Ping: http://[url]/mt/mt-tb.cgi/153
...
I pulled out the URL since it's just an IP address on a private network so I don't have an external sample to show, but the items showing up are for "William" (actually the list above has about 7 names in it, I just truncated the list down to show the issue). Right now the only trackbacks that are on this blog are for "William" (I'm still trying to test all of this out before I start to ask everyone else to include the pings on their blog posts back to this system.)
What I'm trying to do here is get an "index" page that lists the "important" posts from my groups blogs all listed on one, dynamic listing. I even tried the MTBlogPings, but that didn't work either (I get different "error" when I do that. Then I only show the "Social Networking" link for everyone.
Anyone else figure this out, or is there some other apporach I'm missing? I know that I'm new here with all of this, and to be honest I'm learning all the time...