The Dynamic Zones forum (Snitz) currently doesn't handle excesive long links correctly yet, so here's a tip:

Example:
http://www.dmxzone.com/forum/topic.asp?TOPIC_ID=30780&FORUM_ID=10&CAT_ID=5&Topic_Title=Lauching+a+modeless...Forum_Title=JavaScript

Answer

When posting a link of another forum post:

You can easily trim off the last two variables the links use: Topic_Title & Forum_Title. Now the link can be shortened too:
http://www.dmxzone.com/forum/topic.asp?TOPIC_ID=30780&FORUM_ID=10&CAT_ID=5