Nxt Alias System
Nxt offers other services such as the Decentralized Alias System (DNS).
This allows users to register a NXT Alias that points to a URI, which can be anything from a web address, NXT account number, email address, or even a phone number. If you have an Alias enabled web browser you can enter "nxt:[Alias]" which will take you to the specified URI, such as nxt:google takes to you http://www.google.com.
Currently there are plugins available for Chrome and Firefox that utilize the Alias system. Find them at nxtra.org