I used to like the Joel on Software fora about 2-3 years ago. They weren't overly technical, but they had more than a few people who always seemed to have something interesting to say (Bored Bystander comes to mind). Unfortunately, Joel killed them off for varying reasons and I haven't found a good substitute since. There's still one focused on ISV development called Business of Software, and I think the Bingo Card guy (Patrick McKenzie?) posts there quite a bit.

Some of the other Joel posters went to a place called CrazyOnTap, but I wouldn't recommend that. It makes YouTube comments look sane.