I have two widescreen monitors and a third, non-widescreen monitor. I would like to span a wallpaper across the two widescreen monitors and have a different image on my other monitor. After searching on the forums I found a mention of this in April last year, and you said that you were planning on implementing that later that year. I realise it's only just 2012, but has this feature been considered further? It'd be very useful.
Also thanks for all your work on the program. It is a godsend and I can't imagine not using it in any multimonitor setup
We're planning to make some changes to the wallpaper feature for the version after next, and we'll definitely be considering this feature at that time. I've added your vote to the feature request and I'll be sure to post an update when we have one.
We've just released DisplayFusion 6.0 Beta 7, and you can now combine monitors while using the Different Image background mode, so that you can have an image span certain monitors, but not others.