LiveWriter Technorati Plugin
The online Technorati Tag Generator has been turned into a Windows Live Writer plugin by its author.
Download the file, extract it and put the single resulting file in the Windows Live Writer plugin folder (see how to manually install a Windows Live Writer plugin).
There are no configurable options.
When you’re ready, click the Insert Technorati Tag… menu entry on the insert sidebar or on the insert menu dropdown.
Enter your tags. Watch out — they’re separated by a semi-colon, not by a space or colon as is usual.
Click OK and the result appears in your blog post (note: style will differ per blog).