Seahawks fans! 49ers fans! Here is a way for you to one-up and trash-talk each other, without annoying the crap out of the rest of us: See which fan base can donate more money to a worthy cause in each other's city. In Seattle's case, donations go to the UCSF Benioff Children's Hospital. San Franciscans are sending their money to the Seattle Children's Hospital. This actually started as a prank back in December, when 49ers fans raised money to purchase a billboard in Seattle, with any additional funds going to a local charity. They easily hit their mark, and things took off from there. An anonymous 49ers fan has promised to match donations in each city up to $100,000 each, for a total of $200,000. Earlier this week, the 49ers and Seahawks each announced they will do the same—so every dollar donated is actually four. As of press time, it's a close race. San Franciscans have pledged $13,419, while Seattleites have raised $20,933. Track fundraising, and maybe make a donation, here and here.