[UPDATE 10:06 p.m.: Approximately 100 Acres] Fire South of Ukiah

I can list a few problems I have with it…
1) It often doesn’t load at all.
2) When it does load, it always takes way too long.
3) You can’t copy+paste into the text box properly. It’s not a normal, working, text box widget provided by the OS/widget library, rather it’s a bunch of javascript that attempts to look like one, while failing miserably. It has copy+paste problems, formatting problems, problems with \n vs \r\n, editing problems, and generally is awful, with both complicated and utterly novice errors, and doesn’t look like or interact like any other text widget on my system. Seriously, they re-implemented a textarea in javascript. Crack cocaine?
4) The box is on top, not on bottom. This is very significant despite seeming minor, as it discourages people from seeing if someone already started a thread on a similar topic that they might want to reply to instead of starting a new one.
5) Entirely dependent on bloated javascript.
6) Forgets my name/email almost as often as this one.
7) Makes me click three check boxes every time I post.
8) Contains advertising for their product and other services.
9) Expects people to create accounts.
10) Makes you click “read more” every time you see a long post.
11) Makes you click “load more comments” repeatedly, including every single time you go back to the page. Read another article, go back to that one… need to load all the comments again if you want to see if there’s new ones.
12) Attempts to do some crap with showing new comments as they’re written, which rarely works right for more than a few minutes, and you have to reload the page anyway. And, when it does work, it shows the comments in the wrong order, that is, differently than the order if you reloaded the page.
13) Makes your site dependent on a 3rd party service which could discontinue its service and delete all your comments at any time, or hold your comments ransom. Think it won’t happen? So did photobucket users.
14) Attempts to push social media crap.
15) Posting comments is very slow, and has a long limbo period where you’re not sure if your post worked or not. And, unlike here, reloading the page or such always loses your comment, rather than allowing you to try again.
16) Clicking any of the things you have to click (like “load more comments”) breaks firefox’s keyboard page navigation.
17) Loads a variety of tracking crap for other 3rd-party services, including sending everything you do to facebook, a corporation with well-documented severe privacy issues.
18) Has up/down voting crap that doesn’t accomplish anything.
19) Apparently, if you don’t have an adblocker (who the hell uses the internet without one?), it shows constant ads to users, and includes tracking by advertising networks. Their privacy policy also mentions they’ll do data processing to keep track of your gender, marital status, and every other thing they can think of to maximize the spam they hit you with.
20) The terms of service have a lot of restrictive things, for example, site owners are prohibited from copying the comments off their service. This is, of course, to make sure they can profit from them in perpetuity.
21) They push christian morality, like banning any pornographic or sexual content.
22) Can cost money. If you’re popular, they want a cut. And, of course, they can hold all your existing comments over you to make sure you pay it.
23) Phones home constantly whenever a page is open, wasting data usage.
24) A whole bunch of gripes I’ve had that I can’t remember right now.
25) Generally is awful in every way.

This site, however, works great. At least in terms of comments, that is – some things, like the about page, are completely broken. Comments are part of the page itself, load instantly, and everything works. My only complaints would be that it forgets your name after a while, and as you said, it doesn’t handle deep enough nesting of replies.