I personally rarely contribute to them (I do contribute to kickstarter film fundraisers). I’m also reminded of Facebook’s practice of putting an “add a donate button” in your stream (even actual business page) when you make a political post. That’s part of a modern theory (“Madison’s music”) that free speech is supposed to be paired with a willingness to take action for others when appropriate.
Update: Oct 13.
Page 58 of Time Magazine's Oct 21 issue "America's Forever War" has a story by W.J. Hennigan and North Ogden on help for families who lose parents in war, and this story relates a GoFundMe that worked well. See the next post Sunday on this problem.