What exactly do the "dogbones" on teh rear suspension do?

[bimmerd00d]

I was under there installing a stock exhaust system the other day, and I noticed that they look easy to replace. I'm sure since i've driven this car just under 100k, that they're worn out. I do have a bit of negative camber that i'd like to get rid of. Do these allow the camber to change under acceleration or what? I searched the archives, but didn't really understand the answers to some of the posts on this subject. Also, if anyone has done a write-up on the sub-frame bushings could they post it?

[Bill R.]

http://www.bimmernut.com/%7Ebillr/images/Tracklink.jpg
I was under there installing a stock exhaust system the other day, and I noticed that they look easy to replace. I'm sure since i've driven this car just under 100k, that they're worn out. I do have a bit of negative camber that i'd like to get rid of. Do these allow the camber to change under acceleration or what? I searched the archives, but didn't really understand the answers to some of the posts on this subject. Also, if anyone has done a write-up on the sub-frame bushings could they post it?

[bimmerd00d]

so the track link is the technical term for dogbone. What i'm wondering, is will this cure a wandering back end. Or is that more of a subframe bushing symptom?