Regarding Alicia and Chloe...I always looked at that as Alicia's last good act. She was giving Clark a gift in a way...that gift was Chloe, one of his closest and best friends learning and sharing his secret. I thought it was Alicia in her own kooky way giving what she knew Clark needed.
I would like
to believe that but Alicia made it clear in the episode that she wanted Chloe to expose
Clark's secret so that the two of them could live together openly
as freaks. She hated being the one who elicited all the nasty looks and shocked whispers. It was classic
Alicia. She really did have serious
issues with boundaries.
Alicia's mistake was that she thought Chloe loved journalism more
than she loved Clark.
Plus knowing how the Smallville writers wrote...it probably would've been another season and a half before Chloe figured it out on her own LOL.