It was never considered a very efficient method for numerical
computation. Glimm and his group were themselves pursuing other
numerical methods, termed front tracking methods explicitly tracking
the fronts and using higher order methods for the smooth parts of the
solutions. Another method was pioneered in Oslo, somewhat confusingly
also called front tracking. Then there is are lots of finite volume
methods.
Some random references:
Helge Holden, Nils Henrik Risebro: Front tracking for hyperbolic
conservation laws.
Randall J. LeVeque: Numerical methods for conservation laws.
Randall J. LeVeque: Finite Volume Methods for Hyperbolic Problems.
--
* Harald Hanche-Olsen <URL:http://www.math.ntnu.no/~hanche/>
- Debating gives most of us much more psychological satisfaction
than thinking does: but it deprives us of whatever chance there is
of getting closer to the truth. -- C.P. Snow
[I posted a somewhat longer followup before, but it must have gotten
lost on its way to the moderators, or something. Stupidly I did not
keep a copy around.]