Got myself a 802.11n compatible router, the new AirPort Extreme.
Beside running my network on N version, faster speed and covering longer distance, another cool reason was I could run a NAS (Network-Attached Storage) on it.
The new hardware is cool. I just plugged in my USB harddisk to the Extreme and I had my storage over the network. I could configured to access the harddisk over the internet through Apple File Protocol (AFP). The Extreme could be enabled for Wide-Area Bonjour too but I could not find any in-depth documentation on the topic so I did not configure it.
Great! After setting up a wireless router at home, now I had my own NAS. My friends could do big files sharing with me when I was offline. This also benefited my mac clients for not lagging and hogging my network bandwidth.