I've been playing around on issuecrawler.net a lot lately and one of the main issues I've been enquiring on was the Luxembourgian blogosphere (in relation to hackerspace.lu). Note the fact that this graph show only sites that have at least two incoming links, that are, so to speak, co-linked.
Besides the fact that hackerspace.lu doesn't get enough incoming links, there are more interesting things to see on this illustration. The most obvious thing being the central position of joeladami.net. If you get a close look at the sites he links at, you'll see that they're of all couleurs and various ideologies, from the extremist left to the extremist right. Ok, this is certainly not a qualitative survey of that blog's contents, but nevertheless, this seems to be a blog that keeps it all together.