Facebook has added a very cool embeddable Fan Page widget, dubbed the ‘Fan Box’, that allows users to advertise their Fan pages on external websites and blogs. Here’s an example of a Fan Box for my sketch comedy group's Fan Page:
Ironically the Fan Box doesn’t work on MySpace. I tried to embed the code into our profile and it didn’t work as you can see from the screenshot below. I don't know if this is intentional or not but it would certainly help users like me who want to interact with Fans on both social networks.