I don't read it, but I have friends who read and write it and generally just skip by, or snerk if the pairing is particularly apt or otherwise amusing in some way. The only way it really bothers me is in the fact that people... how to put this? Don't seem to understand that actors are actors?

And there are some really weird sections of fandom (Lord of the Rings and SPN fandom both come to mind...) that seem to a) take RPF waaaaaay too seriously and b) think it's okay to bring it up to the actors, which horrifies me beyond my ability to tell it. But that's a whole other kettle of fish, right there.