Why did the Fed stop publishing the M3?

Answer 1

Official Statement from the FED:

M3 does not appear to convey any additional information about economic activity that is not already embodied in M2 and has not played a role in the monetary policy process for many years. Consequently, the Board judged that the costs of collecting the underlying data and publishing M3 outweigh the benefits.

Maybe the speech of Ron Paul has to be seen in conjunction with that announcement . The whole speech and the complete announcement can be seen following the links.