In preparation of the new hoeben.net theme I'm working on, I swapped the menu blocks left to right and vice versa. (Amazing, isn't it?)
With the help of a very nice patch, I now have the topics working almost as I want them. Only interested in what we Hoeben's write about cars? Follow this link. If you have a broader interest in everything gadget? See here. The cool thing is, you can even get a per topic RSS feed (eg gadgets RSS feed).