I'm discovering that there's a nice community of infertility twitterers. I'm planning to create a directory (sign up in the comments of this post), but so far there haven't been too many sign-ups (1, if I recall correctly). So... I was going through Machon Puah's tweets and found a better article than the one I recently posted - The secret life of sperm is unlocked.
I'm still skeptical of people's willingness to accept results of such a test, if and when it finally exists.