Do a
search before posting a new link. I noticed that this wasn't actually stated anywhere, so I just thought I'd put up a reminder for people.
Just because a video or article or what have you is new to you, it doesn't mean that nobody's ever seen it before. The web is a big place, and things may escape your notice for a long time. So, if you come across something hilarious or interesting, please do a forum search before you post it to see if it has already been posted.
The search bar is in the top right corner, and if you click the red button without entering any text, it'll take you to a screen where you can refine your search, so that you can search the Mirth Canal forum for any previous posts of the link. For search terms, use the name of the video/article/whatever, or if it doesn't have one, some keywords that describe what it's about. This doesn't take long, and it stops the forum from being cluttered with redundant threads.
Of course, this works both ways. When you do post a link, try and include the name of the link, or a brief description of what it's about, rather than just posting "LOLZ look at this hilarous video!!!1". If it's a video that has a twist, either use a description that doesn't give it away, or post it behind spoiler tags:
[SPOILER][color=#F8F8F8]The monkey sniffs his finger and falls off the log![/color][END SPOILER]
Which will show up as:
[SPOILER]
The monkey sniffs his finger and falls off the log![END SPOILER]
However, this will still be included in the search results.