User satisfaction with ebusiness is up, driven by strong gains in social media, according to a new report.\nThe American Customer Satisfaction Index (ACSI) E-Business Report 2015 \u2014 which surveyed 5,400 users on social media, search engines and news sites \u2014 found that user satisfaction with social media is up for the second straight year, climbing 4.2 percent to an ACSI score of 74 on a 100-point scale. Just two years ago, social media ranked among the bottom three industries.\nThe ACSI gauges user satisfaction for all major social media sites, including Facebook, Twitter, LinkedIn and Pinterest. Nearly all improved year-over-year, though Facebook posted the highest increase at 12 percent, jumping to an ACSI score of 75 \u2014 ahead of the industry average.\n[ Related: Consumers browsing \u2014 but not buying \u2014 via mobile and social media ]\nClaes Fornell, ACSI chairman and founder, attributes social media\u2019s increase \u2014 and Facebook\u2019s in particular \u2014 to improvements in mobile applications.\n\u201cToday\u2019s consumers practically live on their smartphones, and mobile compatibility is increasingly important to customer satisfaction,\u201d he says. \u201cSocial media has made strides in improving the mobile experience, particularly through mobile apps that can be optimized by operating system to ensure better compatibility with various screen sizes.\u201d\nSocial media surpasses the other ebusiness categories for ease of use on various devices, with an ACSI score of 78 \u2014 a three-point increase since last year, according to the report.\nAll the news \u2026 \nAlso contributing to social media\u2019s increase in satisfaction is its focus on content and privacy. While Facebook doesn\u2019t produce any news reporting, for example, it\u2019s now an important distribution channel for media outlets, the report notes. Social media sites now match news and opinion sites for freshness of content, with an ACSI score of 78.\n[ Related: 9 ways mobile and social tech improves the shopping experience ]\n\u201cThe social media platform is an important channel for news organizations, and consumers are increasingly turning to Facebook and social networks for news updates,\u201dsays David VanAmburg, director at ACSI. \u201cSo perhaps it\u2019s no surprise that social media now scores as highly as news and opinion sites in terms of providing fresh content and up-to-the-minute information.\u201d\nNew efforts to give users more control over their privacy, such as Facebook\u2019s redesigned privacy center and news feed controls, also contributed to social media\u2019s increase in satisfaction. This year, users feel that social networking sites have greatly improved privacy protection, up 8 percentage points to a score of 77.\nWhile Facebook posted the highest increase in customer satisfaction, it didn\u2019t rank No. 1. Pinterest, for the second straight year, holds the top spot with a 3-percent increase and an ACSI score of 78, followed by Wikipedia, YouTube, Instagram and Google+. Facebook, collective \u201call other\u201dsocial sites, Twitter, Tumblr and LinkedIn round out the top 10.\nCustomer satisfaction with YouTube jumped 3 percent to an ACSI score of 76, predicated on its view time, which is up 60 percent. YouTube also has more viewers aged 18 to 49 than any U.S. cable network on mobile devices alone, the report says.\nInstagram debuts ... with a bullet\nInstagram debuted on the list this year with a strong ACSI score of 76, just above Facebook, which acquired the company in 2012. Under Facebook, Instagram has grown from 30 million users to more than 300 million. Instagram led the category for ease of use on mobile devices.\nMeanwhile, Twitter posted its highest ACSI score at 71 after a 3 percent gain. LinkedIn still ranks below all other social media sites, according to users, despite a 1 percent gain this year and 8 percent leap a year ago.