An Australian fertility clinic's ad (seen in FHM) involves pages stuck together. Pull 'em apart, and there's a photograph of a sexay woman and the line "Don't waste your sperm." So… We want these dudes contributing to the gene pool?
Australian sperm clinics have to try harder because their sperm donors can't remain anonymous. Not surprisingly, the fact that the men can be contacted by grown kids has led to a sharp drop in donations. A lot of single ladies/lesbian couples/married infertile couples depend on sperm donation, so give the clinic a bit of a break for trying to get more men interested.