I own an Alienware computer, and on their web site they have a bulletin board that have a preview feature that works in the form of a pop-up window. Their board comes from a web site run by Snitz Forums.
http://forum.snitz.com/
Perhaps our friends at FT will look into this and find a way to add a preview feature.
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<font face="Verdana, Arial, Helvetica, sans-serif" size="2">"There are only two reasons to sit in the back row of an airplane:
Either you have diarrhea, or you're anxious to meet people who do."
Henry Kissinger</font>