I just thought of a great idea.
Assuming our key party platform, (Reform patent system, Strengthen Privacy, Net Neutrality, and Open Government), won't be changing anytime soon, perhaps making a T-Shirt with these listed on the back large enough to read properly would be a good idea. I was just looking through our merchandise and I see that all of our shirts just have the PPCA logo on the front, or they say "Pirate Party of Canada", but a person just walking by who sees the shirt isn't going to know what it represents. For all we know, most people might be taking it as a joke.
Along with the logo, our website URL would certainly be helpful too.
This way, not only can we talk about the party to others and tell them our platform, the people who we cannot reach directly will at least have a bit of a better understanding of our party. Hell, I don't mind being a walking billboard if it attracts people to our party.
I think you are on the right track, the message needs to be easy to relate to. Just as "Pirate Party" on it's own has no apparent value to most people, "reform patent system" and even "net neutrality" are somewhat meaningless too. Instead, the focus should be on real world implications, my ideas:
The Pirate Party believes that consumers should have the right to copy media for personal use:
Support copyright reform: pirateparty.ca
Why pay for private software, when public software is better... and free!
Promote free software with patent reform: pirateparty.ca
The Internet: A fair playing field or a corporate playground?
It's time to legislate net neutrality: pirateparty.ca