cleaning my ps3 fans

i know there is probally tons of threads on this,but anyways i have a 40gb ps3 and it the fan is very loud just after 5 minutes of use. Its a well ventilated area but it gets pretty dusty so i think the fans need to be cleaned, whats the best way about doing this? do you recomend this, but i heard its bad for your ps3? Heres a video of my ps3

http://www.youtube.com/watch?v=xB0v7nC-eQc

If you can just take a low-powered vacuum to suck out the dust in the vents. I believe that is the method recommended by Sony.

Do NOT follow that video! just get a vacuum and use that.

Everybody always says use a vacuum, so I'd do that.