When I'm using MFC I use PM chat exclusively, but only after I have made a connection to the model and showed her that I am interested enough to tip considerably in public chat. However, I usually wind up tipping more when in PM chat, as I know that this is her job and her time is not free. I also ask for permission to add her to my friends list. I rarely use 3rd party programs like Skype, and I've never used Twitter, FB, Snapchat or any of the social media type of sites. The way I look at it, if a model is not online on the site where I met her, I'm inclined to think I should not, or that they do not want to be bothered otherwise. However, I think the caveat to all of this is that if a model asks for my Skype and reciprocates with her contact information, then I am of the mindset that she wants me to contact her using that medium. But I don't abuse the privilege, and will only ever use Skype to find out when she might be online next, and if she doesn't reply, I assume she isn't online or doesn't want to be bothered and will not send a followup query. I think the responsibility falls on the model here with how she manages her time and contacts.