If you means the time to check out feeds, liking people and such then less than 1 minute a day. But if you mean the time i spend to increase my website social signal then it is all day.
I have a question: - are you spending the time on social media sites just for fun and recreation, or is any of it for marketing and traffic generation purposes ... or market research? Curious to know ... specially as everyone seems so busy!
Honestly i spend around 3-4 hour a day. i think i am addicted not so sure, i just use it to promote my site.
for marketing purpose, I think I can spend up to 10 hrs on facebook. for personal use, I think about 2 hours.
Depend on requirements. Depend on friends and how much time i have. Most of 2 hrs on social websites.