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

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