The Academy of Motion Picture Arts and Sciences has a contact page here:
http://www.oscars.org/contact/general.html

Here's the message I'm sending them:
I can't say how disappointed I was by the memorial section this year.
The pictures were hard to see and harder to read the names. The camera
work showing them missed time and time again. And the lack of mention
of the passing of the marvelous actor Kim Chan was a terrible
oversight on your part. It was a great disservice to the fans and
showed very little regard for the fine actors we lost in the past year
and their families. They deserved better.