For the past 5 or 6 months, I haven't really used any of my social networks (besides ATRL, if you count that), but I haven't used Facebook, Tumblr, or Twitter. I will admit, I log into Instagram every once in a while, but I barely upload photos or like them. What you you guys?
Facebook: every day for messaging, but it's atrocious
Twitter: constantly
Tumblr: a few times a week, sometimes I go weeks without using it
Instagram: I post pictures around once a week but I go on it a few times a week