I’m going to start by saying this is NOT a complete solution, as it requires an extra click before the webdoc is even visable.
WordPress.com doesn’t allow iframes, but webdoc needs iframes for embedding. Using a bizzare work around published by Netty Gritty at shongjog.wordpress.com I’ve been able to produce an “embeded webdoc” below.
If you want to be able to do this, follow the instructions found on THIS post on his blog:
http://shongjog.wordpress.com/2011/01/25/how-to-embed-iframe-widgets-in-a-wordpress-com-blog-%C2%A9-netty-gritty/
