So in the begining ... tom asks jack if he wants stones for the glass house he is living in. I think this is the beginnig of the con. they want hm to stop asking questions and stop taking control of situations. cuz he is so good at seeing through thier BS...

Thus begins the next con... I think they are scare tactics becuase they have underestimated jack repeatedly. hence the need to get someone in close with him... aka juliet. but jack probably already sees that and is in a sense taking juliet as collateral for his protection down the road.

when jack "throws stones" so to speak on the island with Bai Ling, he gets beat up eventually. Bai Ling obviously told her brother what happend. maybe the house fell down around him, but she was acting shady for a number of days/weeks coming and going and keeping secrets that eluded to her being a prostitute.

but she was right in that he is a Leader. OUR LEADER!

Keep throwing stones Jack!