Thanks for posting the charisma guide. I enjoyed reading it. I have one tiny detail that I've noticed to be different in my game from the guide. Whether the mirror says practice storytelling or tell epic story depends on whether the Sim is confident or very confident. Even at level 10 if the Sim is only confident, it will still say practice storytelling.
I don't have any experience with the social networks. I had been thinking of trying them just out of curiosity, but my Sim always seems to be busy doing other things. If I try them and figure out anything I'll let you know.