MBP in lid closed mode, will the display get to hot?

i run my MBP in lid closed mode all of the time, as i have a Cinema Display hooked up. i'm not too worried about the MBP overheating, but i was wondering about the display getting extra hot from the MBP when it's closed. i do have a radtech microfibre cloth on top of the keys as protection...
should i be concerned?
17" MacBook Pro   Mac OS X (10.4.8)  

I'm interested in this issue too, as I intend to get an MBP but use it with an external screen and keyboard most of the time.
I'd also like to know about ventilation - where does the cooling air come from and go to? What parts need to be kept clear, and which bits can I have up against or close to a bookshelf or hutch or whatever?
Thanks in advance.
PS, I think the glossy screens look fantastic, but also think I'll go for matte since they are more practical.
G3 B&W   Mac OS X (10.4.8)  

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