If you like this blog - or at least the idea of it - you should also check out Ken Levine's blog. He's a very experienced American sitcom writer, as well as the writer of one of my favourite obscure Tom Hanks films, Volunteers. (Remember Ton Hanks before he was a proper actor? Happy days...) Anyway, his posts are about a number of media related things, but when he's on sitcom, he obviously really knows what he's talking about. Naturally, it's all American-sweked, but lots to learn and think about. Have a look here.
I also recommend listening to Martini Shot, a weekly 3-4 minute podcast by Rob Long, author of the wonderful Conversations with My Agent (essential reading (seriously)). Get listening by following links from here or finding him on iTunes.