Stabilizer Links

My Taurus is an SES with 95K on it. Since September I have had to put in three sets of stabilizer links in the rear suspension. The first two had neoprene bushings. The reason I have had to do this is the connection at the anti-sway bar snaps clean off. The original ones were due to age. The last two sets, its unknown as to why they failed. A parts store conjectured that it might have been the neoprene as they don't give as much as a rubber bushing. I'm hoping this time did the trick, but has anyone ever dealt with this before? If it doesn't, my only alternative is a suspension shop as a dealer has cleared the rear suspension as being in good shape.