You may need to do all this from Firefox with the Stumbleupon toolbar installed, but it may be sufficient to just log into Stumbleupon via http://www.stumbleupon.com/login.php . http://stumbleupon.theprawn.com/ says: * A user with the mature filter turned on will not receive pages introduced to StumbleUpon by a user whose mature filter is turned off. Note that you may turn the mature filter off via the "Turn off mature filter" link on the topics [http://www.stumbleupon.com/interests.php] page without necessarily selecting an adult topic for stumbling. That may be appropriate if you happen to be socially liberal and/or if you're eager to increase audience size. http://www.stumbleupon.com/help.html#adultcontent also seems to indicate that you need to set your age high enough. (In that case, I have no idea why my settings work since I have no specified age, I don't think.) Perhaps just unchecking "Allow others to see my age" on http://bhavani.stumbleupon.com/prefs/settings/ will be sufficient -- it's worth a try. Hope something sticks...