Table 2.

Representative Quotes of Domain 2: Positive Feedback about the Prototype Digital Health Platform

Subtopic	Quote
Platform was understandable and engaging	I think it’s easy to understand the information. I feel like the diagrams are helpful. Just like learning, like visually seeing pictures of like the internal anatomy. I love the layout. It’s easy to understand the information. I love the “reveal” feature for privacy.
Videos facilitated comprehension	Man, it’s great because I feel like the video gave a great overview of all the different ways you can manage HIV. It’s not just about preventing it right. It’s also like a lot of things happen and it’s manageable. The voiceover was really clear, and I understood everything… like it wasn’t a whole bunch of like, jargon.
Comprehensive information	I like the information about insurance and local clinics and LGBTQ+ resources. For me, I think that most of the topics you would ever need to know are covered on the website. I think everything is there. Everything you would need to know about sexual reproductive health is there in one place… I think this is really the best way to receive this information.
Acceptability of sexually transmitted infection testing feature	If I needed to get tested, or like help a friend get tested, I’d say definitely I know now how to do that because I’d use this website. I was just like reading through like the kits, specifically how to like, insert it, and like the images – you know the steps on how to do it… it was nice having everything and instructions… like I remember seeing how to send the package, like how to use the kit and how to send them back. I felt like everything was like in one page and I liked it.
Acceptability of anonymous ask feature (“Ask Nellie” column)	[The Ask Nellie column] seemed very inviting when I first started the video, and I felt like it answered a lot of questions. I like the Wiki How-style FAQ section at the bottom [of the Ask Nellie column page].
Likelihood of sharing with peers	I think if a friend of mine saw [the website], they’d like make a mental note of it. If they didn’t need it then, they’d save it for when they needed it. I think I should recommend [the website] to them for questions because you might not know that they have that question but they may have something that they really want to know about. So I think giving them [the website] would be very good. Yeah I’d recommend it just because, well apart from it being a very, like overall informative website, I feel like it has a lot of resources that not a lot of other places usually tend to offer. And the composition of the website is very welcoming overall. I will absolutely use this website and also recommend it to my friends because I think it is a really good resource for people to be looking at information that they need.