WhatsApp has some weird thing whereby I need a smartphone and a telephone number and shit.
Facebook - let's not even go there.
My ideal communication feels like call > e-mail. SMS possibly as an ephemeral 'i'm outside the museum, i can see you from here' type thing.
Basically anything else I just don't really get (for one on one). IM is so distracting that unless I'm doing something mindless like playing a video game, I'd be better off in a call.