Blogger has recently added free commenting that doesn't have the same comment size limitations as Haloscan. The main disadvantage, as far as I'm concerned, is that it requires commenters to register in order to display their names, email, etc. The reason for this is to discourage spam comments. I'm going to switch over to Blogger's commenting system and allow anonymous commenting for now, so you don't have to register if you don't want to. But I encourage you to register as a Blogger commenter. You can then use the same profile on all the Blogger blogs you comment on, and your name and other information will show up with your comments here.
I'm going to see what I can do about migrating the old comments over into the new system. During the migration, you'll see links for both Haloscan and Blogger comments. Feel free to read the Haloscan comments, but please post using the Blogger comments. Thanks.
[Update: I've been playing with the Blogger comment system a bit now, and it has a few more drawbacks than I initially thought. While it doesn't have the same size limitations as Haloscan, it doesn't do paragraph separation (!!) and deleting a comment leaves a deletion notice in its place. It doesn't have an RSS feed like Haloscan does, and doesn't offer comment editing. Please leave a comment on this thread to let me know which commenting system you prefer.]