There are about 30,000 posts a day, and so many hundreds of forums that nobody knows how many (the forum list in admin cp is the page that goes on for ever, you can try and count them up but you always fall asleep or lose count before you get to the end or the computer crashes). Cloudflare the giant global CDN cannot serve our content fast enough and gets huge (terrible, crippling) lags. We close 40 or 50 forums a year and archive some of them. We are just about to open a half dozen more.
Nobody knows the solution as it's only going to get bigger. Soon we will need guides and sherpas to help people find their way out. We've tried closing threads that don't see any action for 6 months, maybe it needs to be 3 days. We gave up asking people to try and stay on topic around 7 years ago, it didn't work - the best way to view this forum is a social forum where the first post is about some kind of vaping thing but after that it can be tennis, TV shows or the Nics game. Search doesn't work here unless you are after golf scores and suchlike.
[added] Someone mentioned the Movable Forums. These are forums that you find once and can never find again. They move around according to unknown parameters, it's a software feature, kind of like the easter egg thing in some apps. It's just part of the fun. Also there is the Random Permissions feature: this is where someone's forum access changes to make something impossible that was previously OK. There is no logic to it all, it's as if someone gave a 3-year-old admin access and they hit a few buttons. Clearing up after that is like clearing up after a party of 3yo's took over your house.
Just try and go with the flow otherwise you'll go mad like the first 4 forum managers did. One is in Berlin Hospital for the Mentally Deranged (don't ask), one took up long range trucking to avoid ever seeing the internet again, one disappeared without trace and is assumed to have jumped off a bridge, and one is in Broadmoor Institute for the Criminally Insane but escapes regularly by convincing people he is a psychologist - he is very plausible (as he is intimately acquainted with lunacy). You can meet him in London and chat before the van with a team of large men in white coats with syringes come to get him. He seems fairly normal considering.
Luckily I was crazy before I got here otherwise they'd be pumping me full of lithium down at the basket-weaving factory now. When they tell me the site has a 5-minute lag, we just got hacked, the front page is displaying arabic propaganda for some mad mullah, half the staff resigned, and we are changing over to phpBB3 next week, I just giggle, change channels and sink another Calvados.
C'est la vie baby!