It would be also nice to have the current thread and/or the node you are replying to linked on the previewing page.
Quit often I started to reply to some node.After doing a few previews I asked my self wether I really answer or comment to the node or not. In some other cases I wanted to continue my answer with commenting on the second or third section of a node, but allready had forgot the exact meaning of that message. Having such a link for reference would be really nice.

Hanamaki