The superstitions associated with the Rosary are just tremendous, but a sincere belief in the power of the Rosary throughout Catholicism cannot be denied. I recall reading that the SSPX had prayed 1.7 Million rosaries (source - with critical Romanist commentary) from the time that they had come under Rome's excommunication until the time the excommunication was lifted.
But I came across an even more interesting site "Rosaries for Life" (H.T. to Romanist Mark Shea for pointing this out) in which the goal is to fight abortion through praying Rosaries (link). The remarkable depth of the superstitious reverence for the rosary can really be seen most clearly from a sub-page of the site entitled "Rosary Power" (link).
I think we should be praying to God, asking that the massacre of the unborn be abated, but the Rosary is not the way to pray. It is saddening to see not only the depth of the superstition, but as well the depth of the sincerity of those who are drawn into these practices.