Ha ha... Yes, like many others, I wrestled with what the heck to do with this plug in. I would put it down for a couple weeks, then come back to it and beat my head against it for a while. This went on for several months, until... it worked! It was one of those processes where you change a million different settings (in the FB app dev area, and in WP plugin) to the point where I am probably not sure anymore what the original settings were and don't know what makes it work. So anyway, I now have it functioning on my work website http://qbservices.net so our blog posts go to our work "FB page" (Here you can see how qbservices.net posts are displayed on FB: http://www.facebook.com/qbservices )
and I also have it on my personal site http://ultimatepeter.com so my different article pages and posts can be posted to either my personal timeline or a separate FB page about technology. (Here is how the ultimatepeter.com blog posts look on my tech page: http://www.facebook.com/pages/Ultimate-Tech/291996587597686 ) All of these actions are happening through the same FB login, you just have to be an admin of the FB "page." The second time, setting up obviously went faster because I understood it a little better. I think the thing actually started working when there was an update to the FB plugin... But then when I went to do it the second time, FB had made more prerequisites to the process of submitting your FB app. That, by the way is the part that takes the longest, if you know what you are doing: waiting for FB to approve your action/app.
So, overall I love what the plugin does... I think some of the install instructions are super unclear and are written by people who know all about how it works, so they don't take time to explain what to do in terminology for someone who is not already in the thick of it... This is muddled even further by the fact that the instructions for install is not updated with how FB is doing things now, so it is kind of hard to know what it is referring to... Blarg.