I use SubEthaEdit a lot when editing wiki or other online content, but I'm a bit
anoyed by
having to copy/paste the text before I get an idea on what it will look like.

Have anyone made any kind of script that simplifies this?

Perhaps I should file some feedback on this as well. What I preferably would
like to be able to
do is to configure the Web Preview not to render it as HTML but rather send it
as a
configurable form to a url and render the result. That would be awesome!