WOW, if FB gets its own crypto coin, I think people will dig in deeper there with everyone else being a distant second as far as number of users and retention.
I'm personally trying to stick with the main networking accounts (FB, twitter, LI, Instagram) but getting around to using more Steemit apps. ^{I can finally use Partiko! I just needed to load it to my Android tablet. happy day}
Honestly, I think I sign up for everything that I find because I want to secure my username. Nearly all of them are collecting dust - but I'm okay with that! Time to visit these new links and sign up LOL