Besides, consumer demand for known donors has been growing.

Many hesitate to simply have a sexual fling or use a "known donor" for fear that the father may someday stake a claim to the child.

There is no clear scientific evidence to tell us that being a known donor, or an anonymous one, is best for every donor, patient and child.

The group said anonymity may be a desirable goal, but known donors should not be precluded.

Most clinics in the United States actually discourage couples from using known donors.

David Einhorn is a known Democratic donor.

Kidd offered a similar "donation" to the leadership campaign of Gordon Brown, but was turned down as she was not a known donor.