Prosumers and accessibility: how to ensure a productive interaction
Yod Samuel Martín García, Beatriz San Miguel González, Juan Carlos Yelmo García · 2009 · Proceedings of the 2009 International Cross-Disciplinary Conference on Web Accessibililty (W4A) · doi:10.1145/1535654.1535665
Summary
This paper examines how accessibility can be ensured in user-generated content (UGC) created by "prosumers" — ordinary web users who both consume and produce content but lack any training, awareness, or accountability regarding accessibility. The authors conducted a field study of UGC sites from the top 250 Alexa-ranked websites, evaluating accessibility documentation, authoring tool features, and the accessibility of actual hosted content. The study found that accessibility was overwhelmingly absent from UGC — for example, only 1 of the 60 globally most-viewed YouTube videos at the time included captions, and none had audio descriptions. Rather than proposing new guidelines, the paper extracts and categorizes existing best practices into three clusters based on who contributes to accessibility. Platform-driven techniques include CMS-enforced constraints that prevent users from generating inaccessible code (e.g., Wikipedia's wikitext editor generating semantic markup automatically), accessible templates and widgets, and automatic generation of textual alternatives. Creator-dependent techniques include prompting users for alt text and captions (e.g., Dailymotion's captioning workflow), giving creators source code access when the CMS cannot handle all accessibility needs, and supporting external specialized editors. Community-added techniques — the most distinctive category for UGC — include moderation-based accessibility cleanup, communal addition of text alternatives and captions (fansubs), user-generated accessibility repair bots (Wikipedia), and community-created accessibility documentation and training materials.
Key findings
The paper's most significant contribution is identifying the community itself as a key accessibility actor — a role that has no parallel in traditional web development. In UGC ecosystems, community members with accessibility expertise can contribute accessible templates that become widely adopted through crowd wisdom, add captions and alt text to content created by others, build automated repair tools (like Wikipedia's accessibility bots), and create accessibility guidelines and tutorials that educate other prosumers. The fansub phenomenon — where fan communities created video subtitles on external platforms (Subtitle.in, Overstream, Dotsub) before YouTube even supported captioning — demonstrates how community-driven accessibility can work around platform limitations. The paper also identifies important fallback strategies: when platforms don't support proper alt text, image captions or titles serve as imperfect but useful alternatives (as on Flickr, Facebook, and Wikipedia). All techniques are systematically mapped to ATAG 1.0 and 2.0 checkpoints, demonstrating that these UGC-specific practices are implementations of established authoring tool guidelines. The authors argue that platform-driven and community-aided strategies are the most effective approaches because they minimize or eliminate the need for individual content creators to have accessibility expertise.
Relevance
This paper was remarkably prescient in identifying UGC accessibility as one of the most significant and underaddressed challenges in web accessibility — a challenge that has only intensified as social media, video platforms, and user-generated content have come to dominate the web. The three-actor framework (platform, creator, community) provides a useful analytical model that remains applicable to modern platforms like TikTok, Instagram, and Mastodon. The insight that platforms bear the greatest responsibility — by constraining what users can generate, prompting for accessibility metadata, and providing accessible defaults — directly anticipates the approach taken by modern platforms like Twitter/X (automatic alt text prompts), YouTube (auto-captioning), and social media accessibility overlays. The community-driven accessibility model has materialized at scale through projects like Amara for collaborative captioning and the broader movement of accessibility advocates on social media educating creators about alt text and captions. For platform designers, the paper's taxonomy of techniques provides a practical checklist for building UGC systems that promote accessibility without requiring expertise from every contributor.
Tags: user-generated content · social media · ATAG · authoring tools · crowdsourcing · community accessibility · Web 2.0 · content management systems
Standards referenced: ATAG 1.0 · ATAG 2.0 · WCAG 2.0