I'm not sure what the best way is to add new data to an old debate - going back to post in the original thread means that only one person will see it - so I thought I'd post it here.
It also shows up in 'Recent Comments.' In general, I think it's better to continue old conversations in the old spot, rather than disconnecting them.
On the other hand, a new comment is more likely to be seen if it's in the current open thread. I'm not sure whether keeping a conversation in one place is more important.
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.