I've never seen such a comprehensive analysis of the social
   networking scene from your perspective before +[1]Isaias yoyo -
   and I enjoyed reading it.* thanks for that! [it was for Alex but
   I enjoyed it] And +[2]Alex Green yeah - if you find yourself
   hanging out somewhere a lot, then use it. :) I'm on all of them
   except Ello. Tumblr is kinda cliquey but it's good if fall into
   one of the cliques. G+ is all purpose - like Isaias, I use it
   for posting mostly, although I usually read the first page or
   two and make a few responses.* But a lot of ppl I care about are
   here on G+ so it's an important place to me, even if I'm always
   behind on posts. I've had twitter forever, but don't use it
   much; it's a dumping ground for my Vines and I check it
   sometimes.* I found it has the potential to be really addictive,
   which is why I tend to stay away from it :P* [I went through a
   Kik obsession a year or two ago and every time I get on Twitter,
   I have to remind myself, "don't let it hook you like Kik did..
   or Vine does]... Instagram is tricky; the community there is
   kinda picky and kinda Facebook-ish in that people get bitchy if
   you start flooding it.* I found it to be a little judgemental
   but if you get yourself a good crew of people there, you can
   have a solid, dedicated following. Of course, you both know Vine
   is the medium I fell in love with (2 yrs now), before that it
   was a G+ obsession, and I do most of my engaging with people
   there. But it all depends on what you're looking for from
   people. Popularity is easy: If I wanted to be popular, I'd just
   repeat the same things over and over again that people expect
   from me. I get followers by being nice to people who want to be
   seen but don't know how, so I boost confidence by encouraging a
   "you can do it!" attitude.* People like that - heck, I like
   getting it :) I've never found a single social network able to
   serve everything I needed, so I jump around a lot.

References

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   1. https://plus.google.com/112191720442453252128
   2. https://plus.google.com/117917630258726503337