Re: YouTube embedding
Just had a look and didn't see any option to remove youtube displays, and it's so deeply embedded in the bulletin's coding that a top admin would need to dig/sift through all the code to add a function.
On the other hand I also find that this is directly an issue with webkit, on my alright connection any page with loads of youtubes or soundclouds absolutely bog down the webkit's ability to display flash, and make it seem like your connection is faulty when in reality it's the browser's ability to handle flash, in "containers".
Do you use Google Chrome? If so, that'll do it. Your connection may be fine... Just multiple instances of flash, embeds, widgets, etc, Chrome can't handle it I find.