"user names with an underscore: change it to a dash and it will work."

Ah - will try that.

I have someone on my LJ FL who's a DW worker who I've, err, Circled, (well, is there a better term?), so assuming they look back through my DW, they'll see those comments. Which are why some go into a bit of detail.

Xpost with a filter worked when I tried it, but it may not be industrial strength yet, of course.