Questions, criticism, suggestions and bug reports are always welcome. EMail is preferred. In fact, the probability that physical mail to me will be answered is virtually zero (call me lazy :-).
Questions about the Unix version should go to Bernd Schmidt (esp. Linux) and Lutz Vieweg (esp. HP-UX).
Questions about the Mac version should go to Richard Bannister.
Questions about the Win32 version should go to J. Richard Sladkey.
Questions about the Acorn version should go to Andreas Dehmel.
Frodo is not a shareware program, but I won't reject any gifts. :-)