SLI question...

O.K. I have two 6800Ultra Oc, and was wondering is there any cons on having my side panel of my case off, temperatures improve a lot when I take the side panel off and have a room fan blowing into the case. My main question is what are the cons of doing this?

Thank you.

More dust, that's all I could think of right now, seeing as my side panel is taken off also.

So nothing that will harm any of the hardware inside of my computer?

Nothing bad should happen. Except maybe u hitting a component inside the case on accident.