I love that in twilight the vampires sparkle! It makes them more interesting.
but thats just me. i seen loads of conflict in other comments on this subject.
Should they sparkle or not?
well, there really isnt an original view of the vampire, like there isnt the original view of the werewolf or faerie. You just got to look at it the way you believe. If you believe vampires sparkle, then they sparkle, if you believe they burn to a crisp, then you just do. Its all speculation to personal belief