Already lowered in the next release candidate:
http://forum.bitcoin.org/index.php?topic=8894.0
Topic: Lower min transaction amount (Read 1329 times)
As bitcoin is getting more and more popular the value of bitcoins has increased. We need to lower the minimum feeless transaction limit (for example I can't send someone 5 cents). I would like to suggest we lower the minimum feeless transaction limit to 0.001 (we need to do this now because to change will take time to take effect because people don't upgrade instantly).
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