101 things is now available in French. This version also has some screenshots and pointers to relevant info and specifications -- something which I've been working on for an updated English version.
7:22 PM 101 French Things
12:00 AM Now with Weblogs
For XML support, the UI elements are bound to the RSS using XPath expressions. When the user enters something into the search field, the expression is changed, and the list updates to show the result.
Right now it only works for non-RDF RSS. I'll need to add something to detect RDF-based RSS as well.
Perhaps I'll package it into an XPI soon.