How Much Breathing Space is Needed?

[onebadazn]

Ok, so I posted my final setup last weekend in the Home Theater Pics thread but didn't get a lot of answers back, so I'm trying it here.

How much room does a receiver need to have? I know it gets warm/hot overtime and it is normal. But how hot is too hot? And how can you tell that you need more room for the receiver to reamin at normal temp But just wanna make sure what some of ya'll think about my receiver's position and the area around it. Someone told me to move the HDHVD player to the other side of the tv stand and remove the shelf but it's 2 drawers on the other side. I hope the pics will be good enough for ya'll to see the gap between the stand the receiver. Thanks!