Show HN: Markdown HN profiles at {user}.at.hn (at.hn)

Article summary

A new service allows Hacker News users to create a custom profile page using Markdown, accessible at {username}.at.hn. To opt-in, users need to paste their username with the .at.hn domain in their profile's 'about' section. The service uses a wildcard DNS entry to handle the addition of subdomains. The page can be refreshed by visiting https://{username}.at.hn?refresh.

Main themes

• Customizable profiles
• Markdown support
• DNS and subdomains
• Hacker News integration
• Opt-in and consent
• Technical issues and debugging

What commenters say

• The service is a great idea and a nice way to display Hacker News bios, but it has some technical issues that need to be resolved.
• The use of a wildcard DNS entry is a good solution for handling the addition of subdomains, but it may cause problems with case sensitivity.
• Some users are experiencing internal server errors, possibly due to the service not handling uppercase letters or underscores in usernames correctly.
• The service's opt-in mechanism is seen as a respectful and effective way to handle user consent, but some users are concerned about potential security risks.
• There are disagreements about whether Hacker News usernames are case-sensitive or not, with some users experiencing different results when trying to access their profiles with different cases.
• Some users are suggesting solutions to the technical issues, such as using a parameter or path to lock in the username, or scraping all usernames to create a map of usernames to lowercase equivalents.
• The service's use of the 'marked' npm package for Markdown rendering is causing some issues with linkification and encoding.
• Some users are expressing concerns about the security of the service, including the potential for XSS attacks, and are suggesting the use of sanitization libraries to mitigate these risks.