A summary of the advantages of range bars and and how to use them is available at this link as advocated by Ken (Woodie) Wood:
Ken Wood gave a very worthwhile presentation on the new range bars on thinkorswim December 7th, 2011.
It is archived under the Chat – Seminars link at thinkorswim
Some examples of trades made in the fall of 2011 using Range Bars:
Some recent stock moves with range bars. Range varies from .50 to $2.00
AAPL has good seasonality starting pre-Christmas and we were expecting a move in the $20 range
U.S. Steel (X) has good seasonality in the period shown and we were anticipating a move to the 100 daily moving average at 28.50