Want to mess around with the Borderlands 2 skill trees, and get a feel for precisely which direction you're going to take your characters before the game is released? Well, Gearbox has put together a little something on its website that allows you to do just that.
I actually think this is pretty useful -- it'll allow you to get an early feel for all the skill trees, and how to best use all your points. So when September 20 comes around, there'll be less faffing about, because the experimentation will already have been done.
There are currently four character trees to play around with -- Axton, Salvador, Zero, and Maya. You can head to the original forum post for more information, including what new functionality will be added to this feature and when.