I'd just like to point out something Polk showed me back in the day. In the area of chasing:
Aside from basic strategy like, knowing where people are likely going and terrain familiarity. He macroed, or if you will, hotkeyed:
N,S,E,W, up, down, where, and scan - to his num keypad.
using the local echo function of a mud client (meaning when you type something and hit enter it stays there so you can continue to spam it by hitting enter) he would chase people down with the num pad while spamming
Murder (whoever is being chased)
throw shield (dude who's about to get shielded to the face)
NOTE: In my experience it's best to macro actions that do not lag you, because if you accidently hit trip three times.. guess what you're doing for 6 rounds?
The more you know.
