The effects of Ethanol on...

Not wanting to restart the previous discussion on how ethanol is made and
how much is in which fuel, available where, the question I am interested in
is; does anyone know what effects ethanol will have on:
tanks - metal / composite
fuel systems - tubing/electric pumps/carbys
Engine - serviceability issues/foreseeable maintenance conerns

The EAA is obviously concerned about ethanol in aviation fuel otherwise they
would not have fought the introduction(according to the EAA mag). This is
defintiely a concern for all aviators, not just the US.

If there is going to be 'no option' in the future (other than running on
Avgas or Diesel), then we need to start educating the masses on what effects
it will have, especially the home maintainers.

I understand that ethanol will degrade some resins, which could throw a
spanner in the works for the wet wings like the Jabiru. Though it could just
as likely eat away at sloshing compounds etc.

Cheers
Chris