>>/33424/
16 is the maximum number of pages, can't be increased on my end. From what I've seen threads won't bump past 500 posts even if the limit is set higher, but I'll go ahead and do that.
With the rate they seem to be going, it may be best to hold off on making new Marky threads until they're nearer 1000 posts. I don't know if this would be ideal to do for all threads though, since it may create a situation where a bunch of the more active threads are off the first page for ~weeks at a time. Which, in addition to creating an added hassle for users who want to follow multiple threads or just to see any new posts on the board by making them enter into each individual thread through the catalog or to dig through the pages, it may make the board appear less active and it would also make moderation more difficult as all those threads being posted in still have to be monitored and now they wouldn't be bumped with any new posts. I think in most cases it is much preferable to have the more popular threads and threads being actively posted in on the first page.

I've gone through and deleted some old low-priority threads. I've been doing this periodically on an as-needed basis, but I neglected it for a while and it looks like a higher-priority thread was bumped off when an unanticipated number of threads were made in a short period. Of course, it's inevitable that those threads will be lost from the board eventually, but we'll try to hold that off as long as reasonably possible.

 >>/17577/ and  >>/2211/ are essentially the same thing, yes. There is no way that I'm aware of to merge their contents. I'll just leave this for now.
 >>/25811/ and  >>/5975/ are also basically the same. Not sure what to do about this.
 >>/18159/ and  >>/14827/ as well. I'll probably delete  >>/14827/ even though it was made first, since it has no image in the catalog and has fewer posts.
 >>/12639/  >>/13153/ and  >>/13486/ are all the same. I don't know why there are three of these threads. I'll likely delete the first two soon.
There are some other similar threads I see. I really wish people wouldn't make what are effectively duplicate or only slight variations of already existing threads, but I don't want to come off as overly hostile or to discourage posting by aggressively deleting them immediately when seen, and if people have already started posting in them I'm hesitant to delete them at that point as well.

Anyway, there are more threads I'll delete when it's necessary, but there's space on the board for now.