It's probably been said already, but as I can't use the search facility on here to check cos it's useless, please bear with me!
I agree that the headings should be just that - headings where no one can post. Having lived with the new sub-sections for a while, I've noticed that people are still just posting under the headings, while the sub-sections remain pretty quiet. It now takes longer to find posts, as I have to read through the ones under the heading AND the ones under the sub-headings.
Having said that, some of the sub headings are good. I like the Quizzes & Puzzles split, cos I'm hopeless at crosswords, but like quizzes. I also like the travel split, cos I'm fed up of reading posts asking 'how long to get from A to B' - use the internet and look it up yourselves!!