So?
So? If you grew up in between Palace and Brighton, you'd choose to follow Palace or Brighton, and you'd know people who chose differently. Same principle, different region of Sussex. At least with the Palace rivalry they feel the same about us, no one at Portsmouth cares.
We've only got 3...
Like Portsmouth? Can you name me all the other traditional rivals please, just so I know.
Does anyone who supports Portsmouth know that a Brighton fan thinks they're our rivals?