nasty bears

I have a problem with bears regularly wrecking my bird feeders. I recently heard about a "bear proof feeding system" that is supposed to keep bears from feeders and keep them from hanging around. You are supposed to be able to use your favorite feeders with it and is so strong that bears cant pull it down. Does anyone have one or has anyone heard of it. I googled it and found it for sale on one site. I like seeing the bears but I like my birds better.

The best advice I have ever read about feeding birds and dealing with bears was that when the bears emerge in the spring it is best to put away the bird feeders.

Hi trouble, Are you talking about this one?

http://www.youtube.com/watch?v=s70knmrXpbg

I did not see the u tube video. I found it on www.monsteroutdoors.com. It has some really cool photos.
It sure doesn't look very hard to set up. I will try to get more info... I hope someone will reply that has one or has at least seen one.
I posted on some other forums, hopefully someone will respond.
Thanks