We have been talking to the folks at Glogster for a while now.  They have an amazing site.  If you haven't been there - go.  It provides you with the ability to create multi-media posters that can then be embedded on facebook, your blog, etc.

We will be pointing to them more and more from activities that we create on freshbrain.org.  Especially in the school and after school areas.  Here is one example.