Would you say bfp or bfn and why?

I'm not understanding why people think this is a bfn.....if I seen this on one else page I would say a bfp because you can clearly see a faint line....it doesn't have to be dark as long as its there.....maybe its not to many people here that know how to actually read pregnancy test!!!! Maybe I've been reading them wrong I don't know now....what would you say this is and please explain why!!!!