Thats not really how Pow[1] works. It's weird that there isn't any mention of Pow on that page if that's what it's using in the backend. I didn't download it since I'm not on 10.7, maybe it mentions it later.

I wrote something similar (https://github.com/rktjmp/ker-pow) a while ago but never considered using it to actually make new ~/.pow/ links, I might add that in. Anvil is probably much more useful!

[1] http://pow.cx