The Standard Haskell committee is debating a possible modification to the semantics of pattern matching; the goal is to make the language simpler, but the cost is an incompatible change to a basic part of the semantics. To help us weigh up the cost against the benefit, we'd like to poll the opinions of Haskell users. You can read about the issue at http://www.cs.chalmers.se/~rjmh/Haskell/Messages/Polls/matching.html where you'll find a link to a web form for collecting votes. Please give us your views! John Hughes