Oh, no I haven't. Looks like they beat me to it in terms of features and sharing. It seems like they could make it easier to use, though. You have to go to the

Oh, no I haven't. Looks like they beat me to it in terms of features and sharing. It seems like they could make it easier to use, though. You have to go to their custom styles page and add CSS without seeing its effects directly. Their userstyles.org website also needs some help (perhaps someone should make a stylish style for userstyles.org itself). Nevertheless, the sharing features are quite nice. I wanted to add such sharing capability myself.