sperm donation curiosity?

A topic that has fascinated me for a long time...
I've been contemplating on posting about it, so now here it is. I hope you will dig in and give me some honest opinions! :)

Ethics
It poses questions such as; in what ways are you influencing your child, by withholding it it's biological father? Is it the way you'd want to conceive a baby? And isn't it weird for you as parent to not know who is responsible for 50% of your baby's DNA?

Anonymous or not?
In the Netherlands, up to a few years ago it was possible to donate your semen anonymously. Not any more. It basically means that children are allowed to ask for the contacts of their donor, once they've grown-up. And in case of emotional distress a court may decide to give such information while the child is still under aged. It's a one way street; donors can not ask for information of or contact with the children or their mothers. Only when the child decides to contact him, such could be possible.

Applying to be a parent
And that arrangement has made the number of spermdonors drop dramatically. The "spermbanks" we used to know are gone. The clinics have to do with sometimes only 3 or 4 men, so that parents wanting to conceive through such donors, are lucky if they get to pick skin/hair-color. It creates long waiting lists, there's a maximum of 5 kids per donor. Wanting-to-be-parents have to apply for the semen, as if applying for a job, only more personal. The procedure is not only accessible for parents of whom the male is infertile, it's also for lesbians and single women. Since medical cases are put on priority and even for them there isn't enough of this so important ingredient, you may see that however qualified as parents they may be, the others are often not even getting close to the jackpot.

Informal roads to semen
Usually those who arrive at a clinic for donated semen, do not have the option of a male friend who'd want to do the honors. So what happens; there are a lot of websites appearing fast as mushrooms in autumn, where the wanting parents are trying to get in contact with men who would donate. It's like dating over the internet, only with very different purpose ;) Once found, and there seem to be a lot of pretenders too, there is a standardized contract on which either party can add specific demands before signing. And the male displays a copy of a STD-test (of which one hopes it is valid). He passes by every once in a while with a cupa semen, which the women inject at home themselves, until pregnancy occurs. There ares some rather creative solutions of single women/lesbian or heterosexual couples that bond with a gay couple who are also wanting a baby, to have a baby "together".

Window-shopping
Recently, I've seen a tv-show that says in the US you can practically window-shop your donor. But I came to discover it's actually more close to home; in Denmark. Depending on the donor; you get length, weight, eye/hair/skin-color, occupation, education, even description of their personality and their baby-pictures. Their special liquid is available in several qualities to be delivered to your home: Cycros Donor semen.

Questions
So, I'm very curious what you guys and gals would have to say on this subject.

What do you think about:
-the ethical questions of spermdonation in general?
-anonymous donation?
-the new rules as established in the Netherlands?
-single women applying for donated sperm?
-the informal search for spermdonors?
-the "window-shopping" for spermdonors?
-any other thought/question/opinion that pops to mind after reading this :)

And off course:
Does any of you here have experience with this topic?
As donor, as parents, as children, etc?
Or have you ever considered to either donate or use donated semen to conceive?

Any response is much appreciated! :)

RedRoses