For me, rpg.net, tdpri.com, sport-touring.org. I also pay for access to the Ubisoft forums by buying their product (Rocksmith and $1,500 of DLC). I've paid money for other sites but stopped paying and going for various reasons. Sport-touring.net was bought out by Vertical Scope and the place is inundated by ads. The posts have dropped off quite a bit and folks are over on STo instead. Sportbikes is another one bought by Vertical Scope that I originally paid for access but dropped off of after the purchase. I paid for access to another gaming site but when they changed the layout to make it impossible to read on a tablet, I bailed and haven't been back.
I've had the Disable Advertising checkbox for Slashdot for years so I figure I've paid my dues with postings, as inane as they are :)
I also have a server for my own personal stuff that I pay about $1,000 a year for. Lots of space and ram and pretty good support. Been using them for years. I host my pictures (32,000 pics), blog, vanity site, forum for my ex's hobby, and various programming and game sites. I don't use any advertising. I figure I don't get enough traffic to justify it :)