I personally don't like posting a chapter with less than a thousand words--unless it's in response to a challenge or is one of my drabbles. I think drabbles are my biggest challenge; describing a scene so that it draws people in with such a limited amount of words is difficult for me, because I. Like. Words. All of my actual chaptered stories, I try to keep a minimum of a few thousand words. Some are longer. Some are a lot longer.
As a reader, I'm pretty much the same in preference. I love longer chapters, longer stories, the intricacies and details that can be revealed in a well-written work. Knowing this about myself makes me more aware that I need to branch out periodically, though, and so occasionally I find myself reading short stories, drabbles, and poems. Some are absolute gems--like the drabble collection A Karakura Ghost Story by black.k.kat on FF. And some writers are just worth reading, whatever the length of story or whoever it's focused around.
DG and Kurahieiritr are right: the length of a chapter should probably depend the most on the story flow, style, syntax, and how it reads--both as a standalone chapter and as part of the whole.