The best social network depends on your business and the purpose that you need to use it for. Industry and engagement with your target audience is what you have to keep in mind when deciding which network to use to interact. If you're not sure which to use, Facebook and Twitter is most popular worldwide.
Facebook is the best, but you don't have privacy there. So, if you want to use that social network, then you should be more careful what you share. They are monitoring everything!
I think facebook is the best social media site for getting traffic to your site and twitter is the best for get write information.
I think the best for building a community is Facebook. But if you need more specified, Google+, Twitter and LinkedIn will be helpful. I tried also Paper.li last time - great!
Personally I don't like facebook, its boring. Going by the preferences, I love to spend hours on: 1. LinkedIn 2. Twitter 3. Instagram
It fully depends on your business type. I think Facebook is more universal than other social networks, since it has a lot of features. Twitter is the close second. Instagram may work well if you have quality visual content to provide.
Facebook is the social media with which I had the most success for traffic and conversions. Twitter is also good, but we mostly use it to update our users. Google+ is on it rise, but still not very good, in my experience.
If you want to generate leads & traffic to your website blogs, articles and landing page then LinkedIn is a good option.
All of them are best, you must use regularly to share about your business. Increase more friends and followers daily.
Best Social Network may be different on the basis of purpose of using it. Even according to users statistic Facebook is leading. Facebook: 1.55 billion monthly active users as of September 30, 2015 (Source: http://newsroom.fb.com/company-info/) Twitter: 320 M Monthly active users as of September 30, 2015. (Source: https://about.twitter.com/company)
For my sites I use Facebook in a first place. G+ is my second (bad) choice. These days I started to use G+ more often to see how it goes...
Facebook is a very convenient social network for different purposes (communication, business, news etc.) so for me it`s the best!