Are you serious?! No way would I use a leaf blower!
Use this.....
http://www.swiffer.com/products/swiffer-dusters
 
The greatest PC cleaning tool ever!

I bought a small compressor and that is all I use it for. It stays indoors and I have been using it for years. 
Some guys worry about moisture but it has not been an issue at all. 

If you really wanted an "extreme clean" you can do one of the following:
 
http://www.bhphotovideo.com/bnh/controller/home?is=REG&sku=599911&Q=&O=&A=details
 
which is a low-velocity vacuum that is safe on electronics.
 
You could also use the combination of compressed air and vacuum. Leave a vacuum hose running about a foot or more away from electronics. The vaccum will suction the dust you just disturbed and avoid recycling the mess back into your case.
 
I personally use a hobby-grade air compressor that I also paint models with--the thing works wonders on PC cleaning. Something like these: http://www.hobbylinc.com/airbrush_compressors Best thing about it is that I never have to buy compressed air or worry about the orientation of the can (so that it doesn't exhaust liquid-whatever all over my parts!)

+1 for http://www.amazon.com/Metro-Vacuum-ED500-500-Watt-Electric/dp/B001J4ZOAW/ref=sr_1_1?ie=UTF8&qid=1344023165&sr=8-1&keywords=datavac
 
Not only good for cleaning out your pc but your entire house to get rid of the dust bunnies ! love mine 

It's just odd enough that it might be entertaining for you to video it and put it up on YouTube. hehe

No a leaf blower is for stupid people.
 
Use this to blow off any dust, AND it will also cool off your rig at the same time!

I have used a leaf blower to clean out my pc for 5 years now and have had no issues what so ever... I have one  clean computer... You do want to wedge something in the fans so u dont blow out the bearings...
 
 

I use my dyson.   I really should clean my PC now but I'm lazy atm. dust is starting to permeate into the disc drive.  >.<
 
If I don't clean it once a week it turns into a nightmare. 

Why use a leaf blower when you can use space shuttle exhaust?
 
But seriously though, don't use a leaf blower.  Hahahaha.
 
If you do, video tape it.  I need a laugh.

Metro data vac can be had for 40 some bux, it's powerful enough that it gets all the dust from all the nooks and crannies (even the PSU) but not so powerful you risk blowing a capacitor right off the motherboard. Leaf blower = over kill. Canned air = too expensive. think about it, Leaf blower your risking not only fan damage but component damage as well, Also a leaf blowers intake is not filtered, so what it sucks in get blown out at high speeds. 
 
One time pay for the data vac (can be found for cheaper) covers 5 cans of canned air (maybe more, or less depends on where you are) and it's a work horse. All steel construction, no plastic crap, made to last built like a tank. Use it for youe PC, your KB and whatever else....
 
Just get one, TONS in this forum alone swear by it, me included.

After some searching I've found out some people use a leaf blower as a means to clean your PC from dust. I am tempted to try it, but before I do I would like a confirmation that it can't harm the components, assuming I don't actually touch them with the blower.

Sajin

ThomasStanley
After some searching I've found out some people use a leaf blower as a means to clean your PC from dust. I am tempted to try it, but before I do I would like a confirmation that it can't harm the components, assuming I don't actually touch them with the blower.

I wouldn't do it. I use one of these myself.

Me Too!
 
Welcome to the Forum ThomasStanley even if it is 5 years later.

I guess it's time to look on youtube for this ,huh? Surely someone has used the leaf blower or the pressure washer by now...

direraptor22

saer.

+1 for http://www.amazon.com/Metro-Vacuum-ED500-500-Watt-Electric/dp/B001J4ZOAW/ref=sr_1_1?ie=UTF8&qid=1344023165&sr=8-1&keywords=datavac

Not only good for cleaning out your pc but your entire house to get rid of the dust bunnies ! love mine 

+2 for that! I have one of those and it works WONDERS. BUY ONE NOW YOU WON'T REGRET IT!!!!!

+1 I've been using one of these puppies for years.

bcavnaugh

notfordman
I guess it's time to look on youtube for this ,huh? Surely someone has used the leaf blower or the pressure washer by now...

I was looking for the YouTube video of the guy who used a Power Washer to clean his PC, cannot seem to find it now.

His name is Carey Holzman for the leaf blower. Kind of clever: