Subtle changes, bugs and feedback

With faff...

1. Go to the users page and note their authorId, the 4-6 digit number in the URL. eg @Backstop is user 72105.
   
2. Go to the thread you want to search and start a search within it (RHS, just above following, leave the search field blank) eg a blank search of this thread
   
3. in the URL add &authorId=XXXXXXX to the end (note the capital I) eg a list of posts in thread 131364 authored by user 72105
   
   

Alternatively

1. Go to the thread and note the conversation id (in the URL, this thread is id=131364)
   
2. Go to the user's page and click through to the list of their comments (number in the top right, eg @Backstop's comments are here)
   
3. add &id=XXXXXXX to the end of the URL (eg a list of posts by Backstop in this thread)
   
   

All the details are here if you're curious.