Re: gmail users read on...

"The fact that such services are useful is undeniable.  As is the fact that
"@yahoo.com" and "@gmail.com" email address look unprofessional.  They just
do."

I would go so far as to say "less professional, but still very commonly
accepted - especially under certain circumstance*" ...

* - circumstances such as mailing list participation, for example ...


/TJ