I have posted quite a bit today here so you can see I am struggling a bit. I thought that I would try to post my settings.
In FB, Under Web Site:
Site URL: http://www.pictopoetry.co.uk/blog/
Site Domain: empty
Under FB Integration:
Canvas Page: pictopoetry
Canvas URL: http://www.pictopoetry.co.uk/blog/
Secure Canvas URL: Empty
IFrame Size: Auto-resize
Buukmark URL: http://apps.facebook.com/pictopoetry/
Social Discovery: Enabled
Tab Name: Pictopoetry
Tab URL: http://apps.facebook.com/pictopoetry/
The Rest is default.
If I don't have http://www.pictopoetry.co.uk/blog/ (blog) on my Canvas URL, I get the home page on my app page and my menu gets screwed. On my site I think I use category page templates for my posts because it puts blog posts and poems on seperate pages.