I want to write a widget to emulate the "Hot Topics" hack I currently have at www.everythingulster.com
I'm going to base it on the Comments List and hopefully with a tiny bit of tinkering get it to do what I want (that is, display a list of posts that have been recently commented on - but no matter how many times they've been commented on recently, only list each post once).
The problem is I can't quite get started. I created a copy of the _coll_comment_list.widget.php called _coll_hot_topics.widget.php but it didn't appear anywhere for me to install.
I gather from searching here that I need to develop a plugin to act as a wrapper for the Widget. Can anyone point me in the direction of an introduction or tutorial that explains how to do this?