I tested a small USB keyboard and the RF wireless Prolink PCBO 5304G
http://www.prolink2u.com/new/products/index.php?cid=193 it works fine on the eDGe. I was really surprised to see the RF wireless dongle for the keyboard/mouse set working. Nice! Even the mouse "works", you can move the text cursor with it, still a separate mouse cursor would be better.
That the Android is not a "mouse" OS is not the argument. Over at the ipad they got a jailbreak ipad hooked up with bluetooth keyboard and mouse. And they got mouse cursor on the ipad. It is a matter of software development. And placing the eDGe as a netbook it should naturally support keyboard and mouse, in case user want to use it and stay productive.