Facebook, Amazon, and Netflix continue to dominate their market segments according to the latest SunTrust Robinson Humphrey (STRH) SurveyMonkey Cyber Indices report. Key findings from the report, which is published quarterly, were presented at the annual STRH Internet & Digital Media Conference. 

Eight in ten respondents reported using Facebook according to the Social Networking Index, while in the crucial 13-24 age range, 85% of respondents reported using the social media site. By comparison, one in three respondents across all age groups reported using Twitter, and fewer than one-third reported using Instagram. Both Twitter and Instagram enjoy higher utilization among the 13-24 age bracket, where 48% and 49% use the sites respectively. 

The E-commerce Index found that Amazon continues to have the highest use among all survey respondents, with three-fourths having made a purchase with the retailer. Meanwhile, just 22% of respondents made a purchase on eBay, 11% had made a purchase from Groupon, and Zulily has failed to make significant inroads among survey participants.

In the streaming video and music sectors, Netflix and Pandora significantly lead their peers. Over half reported using Netflix, while under 30% have used Amazon Instant Prime, and just 11% have used Hulu Plus. Pandora remains on top with 73% of respondents utilizing the service, while approximately three in ten respondents have used iTunes Radio, Spotify or iHeartRadio.  

"Our partnership with SurveyMonkey has been extremely valuable for SunTrust Robinson Humphrey and our clients. These Indices allow us to gain insight into some of the most critical trends in the Internet, which helps shape our clients' investment theses," said Robert Peck, managing director and internet equity analyst at STRH.

The indices are compilations of monthly surveys of over 1,500 respondents across the United States from various backgrounds and ages. They are predicated on a base of 100 starting March 2014, and are leveraged to help investors track critical Internet trends.