Loryen
Nah, I think lala is just saying she does not want people asking her to "sell" them skills. Personally, I welcome any chance to increase player interaction. I can always ignore or say no to the person asking (or even just tell them I dont know the skill).
No, your post implied selling levels/exp rather than (or in addition to) skills.
and oh, if TI is in favour it must be a bad idea.