If you are using MySQL, you can use the MTSQL plugin to get the information. I did something like this with recent trackbacks which has the code for use with SimpleComments, so I have recent comments and trackbacks all in one.
Posted by Paul Freeman at April 22, 2003 10:18 AMGood idea. I've added a MTSimpleCommentEntry container tag to SimpleComments that acts just like MTCommentEntry.
Posted by Adam Kalsey at April 24, 2003 12:28 AMIt's not that hard. I have an HTML page that shows recent trackbacks:
http://www.ideaspace.net/users/wkearney/trackbacks.html
and it's template is:
http://www.ideaspace.net/users/wkearney/templates/trackback-index.template
I did have to make a plug-in that provides an MTPings container. You can find it here:
http://www.ideaspace.net/users/wkearney/archives/entries/000198.html
I'm working on a feed that indicates all this info for items. But meanwhile I've added a .xml page for the entries. This is chock-full of per-item metadata including comment and trackback threading.
Using the SQL plug-in would work, of course, but is probably overkill for most folks.