I work on my computer a good bit, and I get tired of removing the panel to work on it, so I have gotten to where I just leave it open all the time, while its running. Could this be harmful to the computer?
not unless something gets inside the case, I.E. somethihng falls into the case. it can short out components. but other than that i dont really see much else wrong with it, though there probably is.
Air is suppose to circulate better and help prevent "hot spots" on the motherboard when it's closed up...or so I've heard. I don't know how well this holds true, but even so, it'll at least keep your computer clean.