There are companies trying to eliminate it because there are people with lots of money who listen to the hype that brake induced suspension actions are bad. Yes I agree that pedal feed back is bad, but this can be fixed with a simple chainwheel pulley positioned correctly, ala BB7. I personally hate brake jack and don't know anyone who thinks it is good however I do prefer a bike that has a bit of squat in braking This gives the bike the feeling that it is sinking into the corner and then shoots you out again as you come out. Also when braking, most big forks are going to dive, if your rear end squats at th same time it is going to keep geometry and balance of the bike much more similar to what it would be like without this squat effect.

One thing to note, that the less weight on the rear will create bigger issues, so the worse time there will be brake problems is when the rear end is un weighterd and why would you brake then? The motorcycle industry used to use floating disc calipers but realised that it did bugger all difference now I can't think of any MX bikes with floaters.

As for specialized, yes they have a system that is "neutral" under braking, I found this nice but I still prefer being able to feel the rear end, not feel like I'm floating on a pillow of air, while braking. Yes their Horst link makes lots of difference but it is in no way neutral, it is a slightly Squating system. There are many other systems that are designed to change how the rear acts under braking however no shock comapny has ever tried to design out brake forces on the rear of a bike. Mojo have even publically said that brake jack and squat is an evil term that has been coined and will not have any effect on a bike being ridden by a competent rider that knows how to brake!

Finally most riders will not feel the difference between a bike that supposedly has brake jack or not, axel paths, pedaling forces..... are all things that a rider will notice the difference about. Then when there is a rider that actually has enough skill to tell what is going on, they will have their own personal feelings, Barrel obviously wantys something that squats and has it custom made too, Peat could run a floater but CHOOSES no too, but then again some riders prefer the feeling of an active bike, (god who is that commencal guy???) He runs an after market floater trying to eliminate the problems. And we cannot go buy pros riding on bikes designed to get rid of it, they have very little choice o nthe type of bike they ride.

Lastly, if you want a bike that feels ultimate under braking, pedaling and over bumps........ *cough* DW link *cough*

What I am trying to say is there are different strokes for different folks, ride what feels best to you and don't let comapnies that have spent lots of time and money on a thing such as brake squat think not to buy a bike, it is a marketing thing. Oranges are light and hand built, Specialized have active suspension, Cannondale's are built in America...... it is all marketing, ride what you think feels best, not what you are told feels best!

*edit* sorry for all these long posts if you don't want to read this whole post, just read the last paragraph