User retention at Pinterest: tackling an ambiguous problem | Hacker News

The fact that registration is required for no obvious reason kinda makes the site a no-go zone for me. I only occasionally land there via Google Image search. Maybe I'm just not the right target audience, since I'm not a social media guy. For my specialized interests there are better aggregators such as specific subreddits / HN. Forcing registration is part of the user retention strategy, but for me it makes using the site a non-starter.