Welcome to the Commenting Pixie Party!
Absolutely delete comments like that if you want. It's your blog. What I'd suggest is to pull out that chunk you wrote in the spoiler thread re: comments, make it its own post called something like "my comments policy, follow it or be damned" or something like that, and link to it right up there in your side bar in the "about me" area. Then delete away....
The HOTU may do as she pleases, milady.
You sure use some **** mighty big words, but what the ****, it's your blog and I'll cry if I want to. Yeh Yeh Yeh 
Delete any comments you deem unsuitable for your post. It's your blog. You make the rules. Pretty cool, eh.
Hi, Phantom--
I'm Val and have read your blog for the past week or so. I linked to yours from Jo(e)'s from another from another. I don't remember all the links right now.
Anyway, I'm delurking to say that while it's your blog and you may, of course, do as you wish, you did write in your Potter spoiler thread (quote): "For Songbird and any other speed-reading pixies, here's an open thread for anyone who's finished Harry Potter and the Half Blood Prince." "Any other," "open," and "anyone's who's finished [the book]" all imply that everyone's welcome and can jump right in.
I myself would never think it necessary to preface my comments on anyone's blog with an introduction of myself. ("Open threads, open blogs, public Internet" is the way I look at it.) I made sure to do it here, knowing your feelings about this, though. JM's idea above re: rules for your blog is a good one, I think. None of your commenters intended to be rude by jumping right in and commenting, I'm guessing; They just saw that you were providing a place for open discussion and used it as such.
Anyway, best wishes with your blog and with the Potter thread, whatever you decide. And the bright side of this is that you now know what to expect when book #7 finally arrives!
Good Luck and Good Blog,
Val
But PS, you're almost to 100 comments! Don't delete any yet!!
Hi Val, and welcome to the commenting pixie party. I don't particularly mind if new people jump in and contribute to the thread, but the key word here is "contribute." People who repeat what others have already said, only with more chest-beating, are not contributing, in my humble superhero opinion.
As for the matter of introductions, they may not be necessary on most blogs. But this is a place where people come to chat and whine with their friends. As the host of this party, I like to know who's entering these little glowing boxes to talk to us.
If you don't leave an url or an email address, I have no reason to believe that you're NOT a serial killer. And I'm not so enthusiastic about welcoming serial killers to the party.
I know the arguments about public places and all. But if you're having a big picnic with friends in a public park, you don't expect strangers to barge in, help themselves to the drinks in the cooler, and take up seats on the blankets. At least not without making some friendly introductions first!
Oh, and Amy -- 
Phantom, I'm in the delete camp. It's rather annoying to read these repetitve comments, esp. with the "Here's something you haven't thought about tone!" when, in fact, many others have already posted on that same topic already.
When I read the last "Harry is a horcruxes" comment, I about spit my water all over the screen. That's nothing new, buddy!
And thanks for making me feel welcome around here. I have seen you around in the manner you describe above, but never got over here until now. Now I'm sorry it took me so long!
Ah, well .... once in a while it's fun to throw a Great Gatsby type party. I'd be inclined to keep all the comments unless they were offensive.
I think it is the nature of conversation to be kind of cyclical and hence, repetitive. It doesn't bother me much.
Your regular readers will keep reading new posts and most of the new traffic will get left behind with that one thread.
Oh, PS, I hope it was OK that I put a link to a livejournal entry in your comments. I thought pixies might want to read that entry. But I didn't put a link to your site anywhere, including in livejournal! (I found that livejournal entry via Slate, by the way).
Oh yes, Genevieve, that's fine -- I saw it via Slate myself. (Anyone else notice that Bitch Ph.D. got a shout out in that day's blog watch as well? Yowza for Dr. Bitch!)
Laughing, ADBmom, because it was that same horcrux comment that put me over the edge, too. Some people apparently believe that their insights are SO GENIUS (in Jellyfish's fabulous phrase) that they need not check to see if anyone else has perhaps had the same thought here.
On the other hand, I hate censoring unless the commenter has said something nasty or offensive. That's why I'm torn... delete, or just point and laugh at the chest-thumping non-rocket-scientists?
Well, I say delete at will because I think the "Harry is a horcrux idea" is absurd. But I'm not so good at promoting the free and fair exchange of ideas, apparently.... LOL
You are the boss of your blog.
I am slowly savoring my HP book, but now I am feeling pressure to hurry up and read because I am dying to know what kinds of comments people are putting in there! ACK! I'm so torn! The pressure, THE PRESSURE!
Halloweenlover. You don't need more pressure! I'll leave the comments up -- you can peruse them at your leisure when you finish.
If someone makes a comment that's just too stupid to leave up there, I promise I'll save it and email it to you when you've finished.
Although I should say that it's not stupidity that bothers me as much as arrogance...
Ha ha, please do email me the stupid comments. I would love it.
I have decided that you are totally right and all my anxiety is due in no small part to the fact that I just got back from a week vacation and then spent the weekend away. I am just overwhelmed at the to-do list piling up. I think I will feel better soon.
(Thumping chest)
Your blog, delete at will.
Oh, wait! Repetitive and egotistical! Sorry!
Seriously, I've deleted a few comments from my tiny blog because the didn't sit well with me. I don't have to listen to someone I don't like.
And evidently I skipped out too early on the spoiler thread--over 100 comments? Wow.
Yep, I'm with the "it's my sandbox, and I'll allow in only folks I want to play." Arrogand and pretentious dolts be damned.
I vote for delete. I believe that while my post may not have sent you over the edge, it certainly pushed you up to it. For this I apologize profusely. In my mind I was being flip, not chest thumping, but the finer distinctions are a little hard to make with faceless strangers. And I must confess that I did not read all of the previous 80 some odd posts in detail before I posted myself. So yes, I am an idiot sometimes. In any event, I would have preferred the deletion of my post to the public flaming. But as everyone above has noted - it's your blog, do what you want.
Hey, Greg, this time you gave us an URL -- that's a bit friendlier. I'll take down the public flaming if it embarrasses you, but it was actually the other guy that ABDmom and I were referring to as putting us over the edge.
May I say, on a vaguely related note, that it is positively shameful how many times I have visited or refreshed your page in the past two days to see if there are more Harry Potter posts? I mean, I am a clergywoman! Shouldn't I be too busy for this!!
I'm glad it wasn't Greg who put you over the edge. He's been to my blog and I to his, and I vouch for him.
Heck yeah, it's ethical. This is your party!
And, now that I've read the book, I think I'll go join the discussion.
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