The trouble with quotes

Hi y'all,

DO NOT BE ALARMED, THIS IS A DELIBERATE MISTAKE, PLEASE SEE TEXT BELOW!

This happened to a game-thread used by me, that got garbled when moved in The Big Forum Jump, and Lee helped by finding the problem, and telling what it was. Apparently, one of us (not sure which, Lee didn't tell me) started a quote, but then by mistake deleted the [end quote]-code.
The same thing happened to another thread -not one of my games-, and I was able to fix it by myself this time, but it took a lot of effort finding the post that did it.
(admins: it takes >administrate>comments, instead of >administrate>content to find it; ever had a look at how much comments there are? And how much trouble it takes to find any particular one? ).
Anyway, I'm going to quote a section of this in my next post, and then deliberately remove the [end quote]-code to show what the problem is. If all goes right (ie wrong ), the navigational tools of the site should superimpose on this text.

I'm thinking: new and/or inexperienced users could cause a bit of trouble by inadvertantly removing the [end quote]-code, not paying attention, or not knowing what to do with it. Trouble that garbles up an entire thread, rending it almost unreadable, or at least not to be navigated anymore.
We can't just not allow people to use the codes anymore, that would be too harsh, so I'm hoping there's a way of telling drupal that a quote without an [end quote] is to be ignored?