short chapters or long?

Short chapters for sure, seems at times you accomplish more when the chapters are shorter.

If the style and content are of a high quality, I prefer long chapters. Naturally if your are slogging through something that causes you to nod off every 3 minutes, you need paragraph size chapters, but a gripping story or style grabs you and holds you. It is good thing when you look at the clock and realize it's 3 am, right? And I prefer stories that are woven tightly enough that you can't find an easy place to stop every 10 or 15 pages. The imagination is a great thing, but if there is a break that skips a day or week or month every 5 pages, who's really writing the story?

Here's another vote for short chapters: I don't have long periods of time to read, so short chapters help me keep my reading life better organized.