It took me several months before I discovered that not everything in Main shows up when you click on "Main" - you need to first click on "Main" and then click on "New". It took me even longer before I figured out that there's an RSS feed for Main / New so I could find out when something gets added there.
For me, at least, anything in Main that wasn't also promoted had almost no visibility for several months. Which is a pity because a lot of the best stuff goes there.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
Notes for future OT posters:
1. Please add the 'open_thread' tag.
2. Check if there is an active Open Thread before posting a new one. (Immediately before; refresh the list-of-threads page before posting.)
3. Open Threads should be posted in Discussion, and not Main.
4. Open Threads should start on Monday, and end on Sunday.