Paranoia about iSight camera at top of MacBook display: How to cover up?

I know this will sound ridiculous, but I'm paranoid about the built-in iSight video-conferencing camera at the top of my new 15" MacBook Pro i5.

I've already heard rumors of malicious hacker-types who have remotely accessed computers via various means and were able to turn on the videoconferencing function without the (newbie) computer-owners being aware of it -- and then watched or even broadcast live streaming video of the owners and/or the owners' families, who remained blissfully unaware they were even on camera.

I have no idea if this is true or not, but the rumors played in to my pre-existing paranoia about the very concept of built-in video-conferencing cameras. I just don't like the idea of an electronic eye pointed at me all day long, no matter how many reassurances I hear that it is not turned on and not functioning. I'm not enough of an expert to convince myself that it isn't technically possible to turn it on remotely and also disable the "on" light, if some malicious person were to succeed at getting onto my home network via wi-fi or by gaining access of my computer through a sneaky virus or trojan horse or whatever.

This issue would apply to any computer from any manufacturer that has a built-in video-conferencing camera, but I personally own a new MacBook Pro, so that is my specific concern.

Users here may try to convince me not to be paranoid all you want, but I doubt it will be successful. Paranoia strikes deep. What I want to know is NOT how to overcome my fears, but rather how to physically block the camera as effectively as possible without in any way damaging the screen surface or the computer itself.

The simplest and most obvious solution is to place a tiny square of opaque tape on the top of the screen directly over the camera lens. And I'm quite sure that would block it from working and not damage the glass screen cover, since the tape I'd use would be removable. But what I worry about is something esoteric: that the thickness of the tape, even if it's 1/64 of an inch, will interfere with the proper closing of the lid when I shut it; if the screen is designed to press absolutely flush against the wrist-guard when it closes, mightn't the thickness of the tape, in some microscopic way, slightly bend or distort the screen as it tries to press up against the aluminum frame?

Perhaps MacBook Pros are designed to allow a tiny thin gap between the front of the closed screen and the top of the aluminum frame, to allow for crumbs and grime etc. that might accumulate on the bottom-half over time, so that any detritus would not necessarily crunch into the screen when it closes. What if, for example, a nearly-invisible tiny sand grain were on the wrist-guard, and the owner closed the screen on it? Would it go "crunch!" into the glass? I presume not -- I presume that Apple was smart enough to allow some room for play to avoid this problem.

And if so -- if there is enough room for crumbs or tiny sands grains, then there would be enough room for a very thin bit of tape. Agreed? Or am I wrong -- do the two halves, top and bottom, press together with absolute flush precision?

Any opinions on the matter would be most appreciated. If no one answers, I'll just use the smallest bit of the thinnest tape I can find. And yes, I know I sound paranoid, but I have a suspicion that a lot of computer users have worried about the same thing -- being spied on by parties unknown through built-in videoconferencing cameras -- but been too embarrassed to admit it publicly.