Lost as a great suspense book.....and questions about TLR

This season has been bugging me and I guess it is the pacing. Like a great book the closer you get to the end the faster you read, only I'm not in control of the pages!!!! ARGHHH!!!!! So the last recruit is Jack? Because MIB touched him? Is it the talking to MIB or the touching MIB that recruits someone? I thought Sun lost her voice to keep her from talking to MIB, but then I remembered she already talked to MIB, but has he touched her? I can't figure out if it is even relevant. AND, I think MIB is a liar. Much like Ben. Why tell the truth when lies will do? ps...I so wanted Kate to jump off the boat after Jack.