Kind of new to using Goal tracking and keyword trends and had a few
general questions that a few experts may be able to help.  I tried
looking through the help but was unable to find specific answers that
seemed correct so I am trying here.

1) How does analytics measure goals using exact pathways?  I am
wondering if a person can visit a site, go around the exact pathway we
are looking for, come back to where the pathway starts and then follow
that pathway to the goal, would it record the keyword?

2) Could a person be counted twice in analytics if they followed
multiple goals?  I noticed a few percentages rising up to 110-135%..

3) Why do keywords without clicks(0.00%) show up in my analytics?

Any help would be appreciated