Yes, another recent and welcome change
Normally the OP would edit the title of the very first post and put (SOLVED) if they were OK with what was said and found a solution.
As well as Not interested anymore, a marker for I'm happy with the answer / problem solved ?
eg I asked some questions yesterday but I'm no longer interested in the answers. I don't want people spending time trying to help me but there isn't a message icon to say this. I realise sometimes the answers may be of interest to others (but it's unlikely in my specific case)
The exception I would make is where a Thread is written as a Tutorial. IMHO those Threads should be locked to avoid a long discussion from distracting from the lesson in the Tutorial....R
IMHO tutorials should be initially left open to garner anything that the OP may have missed.Omissions / errata should be catered for by dialog.
There should be a feature where the creator of a thread can lock their own posts