Yeah, that looks fine, although I'm not sure what it is.
As for FAI images, I think most math-related images (equations, etc...) are fine. Abstract diagrams, trees, graphs, etc...
Inside view of a toroidal space habitat, is what I assumed.
I'd suggest some kind of Matrix-style 'wireframe made of equations' thing as being probably the best illustration, except for the obvious negative connotations.
I will be posting news on Friendly AI research here: FriendlyAI.tumblr.com. Follow the link to stay tuned via Tumblr or RSS.