@prologic@twtxt.net I say we should find a way to support mentions with only url, no nick, as per the original spec.

• For @<nick url> we already got support
  
• For @<nick> the posting client should expand it to @<nick url>, if not then the reading client should just render it as @nick with no link.
  
• For @<url> the sending client should try to expand it to @<nick url>, if not then the reading client should try to find or construct a nick base on:
  
  1. Look in twtxt.txt for a nick =
     
  2. Use (sub)domain from URL
     
  3. Use folder or file name from URL