Well, it looks like Slashdot has a new comment system. If you're a subscriber, you can turn it on by smacking the checkbox at the top of a comments page.
Unfortunately, I give you about 5 minutes before you'll be smacking that checkbox back off. I don't know about anyone else, but I normally browse at +0 Nested. This gives me a clear view of the discussion, and allows me to quickly browse from comment to comment. Anything else (e.g. Threaded mode) tends to require too much clicking.
The problem is that this new scheme is nothing more than uber-threading mode. It allows you to see the highest rated comments, and/or fold up the comment listings of lower-rated comments. Which breaks up the discussion horribly. It might be nicer for people who *like* threaded mode, but for the rest of us it's not particularly useful. Even worse, it doesn't seem to save your changes. So everytime I go to a new story, I have to lower the threshhold to 0! Fixing this problem alone would increase the usablility by 100%.
Basically, it's a nice concept, but I can't seem to take a liking to it. Perhaps if the threading was a little less clunky, I might like it. One thing I hope they *don't* do is make the comments download via AJAX. When I use a laptop, I'll occasionally load a large page of comments and read them on the go. This can be nice for interesting topics that have generated a lot of comments while I wasn't looking.
If anything, I'd like to see the page overflow feature fixed first. The way the overflow works, comments can disappear into the ether if there are a large number of responses to a top level post. To actually see the comments, you need to muck around with the threading/flat/nested settings trying to find a way of displaying the info so that it doesn't overflow.
Final analysis: I love the attempt and I encourage Taco and Pudge to keep trying. Unfortunately, the current version isn't it. What do the rest of you think?