It does one HTTP request for each comment in a thread, it looks like.
Kind of irresponsible coding, I think.
Kind of irresponsible coding, I think.
[EDIT: This is HN. Surely I don't have to explain the pitfalls of downloading a Greasemonkey script and running it in your browser without checking what it does? It's even worse than uneducated users tricked into running malware since you're knowingly installing a script.]
Denial Of Service Slip-up? ;)