I have troubles understanding rel=canonical the way google wants me to implement it.
I have a job site that uses filters to show subsets of the total job list. Nothing fancy... normal stuff.
So if you go to /jobs you are able to paginate through all of them. You can than apply all sorts of filters like: /jobs/new-york or /jobs?jobs_position_id=3 (I know this is a "bad" url. I will change it to show actual words, but this does not change my canonical question) Also there is a search like /jobs?query=FOO(&job_position_id=3 additional with filters).
How should I apply rel=canonical here? I tried some strategies, but I had the feeling Google didn't like it. Right now there is none...