So, if the goal is simplicity, where does one draw the line?

No search? How will people find threads to prevent duplication?

No user history? I can't find my own posts?

I wonder if these will eventually be necessitated if this forum is successful, as defined by a large number of users and posts.

Obviously, the code isn't very scalable since the act of writing to a thread involves file-locking for append operations. I hope this takes off to see how you retool your own code to handle high load.