We tend to see folks post 1500 - 2500. The higher the word count, the more difficult it becomes to review a chapter or short story in one sitting. If I can review two 1500-word chapters VS one 3000-word chapter, the smaller ones often get priority because that allows me to reciprocate with two authors in the same time as it would to trade with the author of the longer piece. I eventually get around to the longer posts too, but it simply takes longer.
For the sanity of my regular reviewers, I split many of my chapters in two or even three to keep within the word count range I suggested above.
If anything you're trying to post costs more than 8 points, then your post is at least 2600 words. Most people go over that from time to time, although it helps both the writer and the reviewer to keep things short and easier/quicker to review.