It is our policy to remove auto-playing videos embedded into these forums. This is done for two reasons.
1. Bandwidth : A concern is raised that unwanted videos background loading whenever someone accesses a thread needlessly drain bandwidth from those on Bandwidth caps. This is the same reason we do not allow Signatures over 1mb in size (ie, large animated sigs)
2. Noise pollution : A lot of complaints are raised about people being startled by, or annoyed by videos being played that they do not expect/want to listen to. Rick-rolling being a clear example of the latter.
I hope that makes this policy clear to each of you, and explains the reason for removing such Auto-playing tags.
We have no objection to you posting embedded video that a person can choose to play on their own. But do not activate the autoplay option for these embedded video.