I've looked at many geeklog sites, and I have not seen a single example of a working 'rdf block'.
I'd like to create some, but when I configure one, nothing at all even shows up harry
To create an RDF block:
1) Go to block administration page, click on new block
2) On the block editor be sure to select Portal Block from the block type drop down
3) In the RDF URL be sure to include the 'http://' in the url
4) save it
Then you can reload the page and it *should* show up. It takes some time after saving it because it has to do the initial fetch so you may need to refresh the page a couple of times.