Moe,
Rumors started when Will kissed a male actor onscreen in "6 degrees of Separation". This was early 1990s when that was rare to see in American films(not about homosexuality).
It was an arthouse film that very few people saw, so the rumors flew about what happened in the scene..etc.etc.
I remember reading something about Smith getting that scene rewritten so it would be less sexually explicit.
I also read that himself and Jada have/had an open relationship which would raise eyebrows, as would their links with scientology.
Out of Cruise, Travolta and Smith, I would say Travolta is definitely closeted.
Whatever about Tom Cruise's personal beliefs, everything I have read about the guy leads me to believe that he is a genuinely nice person - whatever his sexual preferences.
