The problem we have is that there are a ton of sites all asking for $5+. With PBS people can choose to give once at whatever they're comfortable with and aren't dealing with an ever increasing number of $5 charges. Some guy's Medium blog probably isn't worth $5 just like I wouldn't pay $5 for any random show on PBS. But donating to PBS once makes me feel like I'm supporting Frontline, Ken Burns, lots of people I like.