I just came across a post that mentioned a 10k character limit. The poster split their story over three posts. That's going to be a pain to critique. I'm interested in learning if the character limit is imposed by the software or if it can be adjusted. I like the idea of hard limits on post sizes--can't tell you how annoyed I'd get by 8k word posts by newbies--but this post was overall under 4k words, I think. Long, but crittable. Anyhow, this is a low-level concern, to be addressed in some future iteration of the boards.
I increased the post character limit to 15K. I don't want to make it much larger than that yet, since it can cause things to slow down. I very likely will feel comfortable doing that down the road.
The character limit includes the BB codes, the tags that produce the formatting.
Formatting is causing the issues. The issue is in part caused by redundant tags.
You can see the tags if you click the vertical Ellipses at the far right of a post form.
You'll see More Options; a new row of icons will appear, probably on the left of the post window.
the [ ] button will show you the tags. Here is an example of a tag that turns on a font, one that sets a font size, and then the font and font size are turned off.
[SIZE=3][FONT=book antiqua]Your Parragraph[/FONT][SIZE]
If you select Every Single Paragraph and set a font and size tag, all those characters count. Those tags are usually redundant.
Instead, don't set the font and size, or set a single font and size for the whole post, by selecting the entire message, and then set the font and font size.
I'll write a new formatting FAQ when I can, and I'll try to add these tips to the current FAQ cheat sheet.