It doesn't have to be out- and-out funny - it doesn't have to be irreverent or controversial - it doesn't even have to be spelt correctly or be grammatically perfect. What it does need to be is relevant and of interest to other people like you. It can be about anything you like - it could be a product review, it could be a rant about broadcasters - it could be a story about a project you're involved with... the world, as they say, is your lobster! It's also a great chance to show off a little bit - go on - let your creative light shine out like a beacon (or is it a tea-light) - share the love!