. Here are a couple of sites I have been to which are rider own and are really good for pics, videos, news and how-to's:
www.bmxtrix.com; this site has how-to's on everything from flatland to dirt and even how to fix your bike. It has lots of top quality videos and pics from the X-games to ones sent in by riders.
www.dirtjumper.com;
this site has a lot of pictures and a map show were a load of trails are
in the UK it has news on local scenes and a couple of videos (but not many)