Freshmeat page: http://freshmeat.net/projects/meld/?topic_id=52%C63
Meld is a GNOME 2 diff and merge tool. It lets you edit files in place (diffs update dynamically), and a middle column shows detailed changes and allows merges. It has user-friendly diff-browsing. The margins show location of changes, and it also features a tabbed interface that allows you to open many diffs at once.
New HTML Parser: The long-awaited libxml2 based HTML parser code is live. It needs further work but already handles most markup better than the original parser.
Keep up with the latest Advogato features by reading the Advogato status blog.
If you're a C programmer with some spare time, take a look at the mod_virgule project page and help us with one of the tasks on the ToDo list!