On ubuntu, I'm currently using xmonad without gnome, and thus no nautilus (or whatever other thing it is that opens Finder-like windows and generally tries to behave like the Finder) by default.

Whenever I need to drop something into a web page, I find myself starting up a one-off nautilus and dragging from that.

I seem to recall there is a tiiiiny utility you run like "drag_target <filename>", and it pops up a window that is a drag target that plumbs <filename> through when you drop it somewhere. Does anybody recall the name of that utility ?