It's still really, really hard to obtain bitcoins. And until that changes, what good does it do to be able to spend them?
That being said, they aren't the only option: other exchanges are cropping up, and bitcoin-otc is also available.
I started that process purely for the fun of some small-time speculation, but the whole hassle of the process made me realize why Bitcoin is important.
I'd drop at least one "really"; you just need a decent AMD GPU. The relatively wimpy one in my iMac can generate 0.1 BTC/day, which at current exchange rates is a few dollars. It would be easy to do 5x better than that with a PC tower, without going nuts with a dedicated mining rig.
The site's still in beta, though, but the devs hang out (and are responsive!) in the Canadian bitcoin irc channel, #bitcoin-cad on freenode.