Super Capacitors as a Power Supply?

What about this?

SuperCap 9V Battery | Hackaday

I understand these wouldnt work too long such as this...

http://www.popsci.com.au/diy/article/2008-02/make-instant-charge-screwdriver

But that seems to be under a bit of load, would an ardiuno and a few other not so heavy use components (umm like say switches, leds, maybe sd card reader?) last a bit longer? If you had say an hour or two of use for example for a 60 second recharge that would be pretty cool depending on the project you made.

Indeed. Thanks for the link. Like others said though, the voltage drops pretty quickly with Caps, but the use of the booster could help :).

Too bad the link from Hackaday to the instructions, etc. is broken :(.