"10-20? Try 1,400, according to the latest Gamespy preview Considering that Blizzard is looking at not only making quests the #1 place to get XP, but also providing XP for exploring new areas in addition to just killing stuff, I'm hoping the level grind will finally be defeated. Here's hoping."
There's a MUD that does the same thing. It is/was called Multi-Users in -Middle Earth (MUME)
You would get Travel Points (TP) for exploring areas.
TP's were distributed evenly throughout the world (1 for each room) and every time a TP was collected it would randomly appear in a new room. As such, less travelled places would start collecting large amounts of TPs.
TPs were required for leveling up, this encouraged exploration.
Neat system.
---
Edited because I'm a goober.
This comment was edited on Jan 27, 10:49.