I have a co-worker who is also a user of Stack Overflow. (Web
programmer). Today I noticed a question on SO that I knew he'd
be able to answer as we do it all the time here. I emailed him
the link, he answered it off the top of his head... boom bam
easy.  I then joked it was too bad SO didn't have an "assist"
badge like in the NBA when one player passes the ball to another
who then scores. There would need to be a mechanism to link the
assist to the answer in the link... but seems trivial.  You
would have to decide if its an internal or external pass/track
mechanism.  I would probably lean towards an external process as
it ensures that links are shared between users who know each
other outside of SO. Shooting from the hip SO has the link share
feature and tracks who created the link. So, if another user who
accessed the question via your link answers the question that's
accepted... it's an assist.  If it were an internal tracking
process I could forsee 10k+ users getting bombarded by questions
from those hunt