It’s definitely something I’d like to address.
Some topics are timeless (like the cats, dogs and personal intro topics, for example) - others have very short-term reach.
I have set up the #events and #wanted-offered categories to auto-close topics when their last reply is two months ago. I can do something similar (maybe six months?) for other categories if people think this is a good idea.
Members would still be able to reply to a closed topic, but would need to reply as a new linked topic.
Also worth us all including the year in our date titles so they “archive” more neatly.