Very curious to hear what the HN community thinks. Not sure if the analogy holds but it seems Rapleaf is turning one's email address into the new social securi

Very curious to hear what the HN community thinks. Not sure if the analogy holds but it seems Rapleaf is turning one's email address into the new social security # (for those in the US)? Also, does anyone know if banks can use this in making consumer credit decisions? I believe this wouldn't be legal, but Om alludes to banks using it in his post.