Get it off your chest! Politics, petrol prices, your neighbour's cat, whatever! Have a good internet rant.
But try not to get into arguments. If there is, then I'll just have to make an argument forum for that.
Example: I hate Melbourne weather. It is the shittiest, most unpredictable weather in the world, with days where you will wear light, absorbent clothing because it's nice and warm, and then an hour later it will be pissing down with rain and you will be freezing your arse off. This happens in all seasons, and makes the easiest-going individual keep a heavy jacket handy.