I while ago I mentioned an article I had read online about what not to put in a garbage disposal. Recently I mentioned it to my plumber friend, asking him, "so what exactly can you put down a garbage disposal?"
He poo-pooed most of the restriction in the article and said that the big problem was that people didn't use the disposal properly. Run water, turn on the disposal, feed the scraps into it, turn off the disposal but keep the water running so that everything does not get left in small pipes that clog easily.
I still will be composting most of Thanksgiving detritus, but it's good to know I don't have to be paranoid about tossing the occasional egg shell along with plate rinsing scraps.