A lot of blogs use a 3rd party service to store their comments. Examples are “disqus” or “intelligent debate”. What’s the point?
I normally use NoScript. If you use a 3rd party service to store your comments, I can’t read the comments unless I turn off NoScript.
What’s the benefit of using a 3rd party service? The default WordPress comments are pretty good.
I made a script to generated the “Reader Mail” template. I can easily do that, because I have access to the WordPress database. I couldn’t do that if my comments were owned by a 3rd party.
Also, if you use a 3rd party blog comment service, it becomes a PITA if you ever want to change.
I also have a script from piwik.realfreemarket.org for blog stats. I don’t mind if you block that. According to my raw Apache logs, I get ~500 unique IP address per day, but piwik only shows ~150 daily unique visitors. According to that, 2/3 of my readers are using a script blocker! (However, I don’t exclude crawl bots from my ~500 IPs per day estimate. I doubt it’s more than 50/day.)
I get annoyed when blogs use a 3rd party service to store their comments. Those services aren’t much better than the WordPress default. When you use a 3rd party comment service, I have to disable NoScript to read the comments.