Christianity's Greatest Contribution?

[Lutheranistic]

From the Barna Group this morning:
Americans Say Serving the Needy is Christianity’s Biggest Contribution to Society
October 25, 2010

Most Americans believe that the Christian faith has made positive contributions to American society during the past few years. A new nationwide survey from The Barna Group reveals that most of those contributions fall into one of three categories. Surprisingly, the survey also discovered that Americans are even more likely to identify negative contributions to society by Christianity in recent years.
http://www.barna.org/faith-spirituality/440-americans-describe-christianity-contributions
Read. Agree? Or not?

[LutherMan]

I read that report and thought this was telling:

The most frequent response, however, was the inability to think of a single positive contribution made by Christians in recent years. One out of every four respondents (25%) said they could not recall anything of this nature. Skeptics (34%), unchurched adults (33%), and Independent voters (29%) were more likely than other people to fall into this response category.