This is only an idea I had, not sure how feasible it is or how it could be done. Sunny King has said that he wanted Primecoin to act as a gateway to Peercoin. We've taken that to heart here on the forum. Anyone that comes here to post about Primecoin will inevitably learn more about ppc due to the nature of the shared forum. They will come to understand that both coins are from the same developer and will research more into ppc, learning about all its innovative features.
We are not currently taking this idea as far as it could go though. Not everyone visits this forum, but a lot of people visit the main website. To help further this strategy, we could create a merged Peercoin/Primecoin website. The content can't be jumbled together though. That would be confusing. There would have to be a clear separation between the content for each coin. Searching ppcoin.org and primecoin.org will take you to different halves of the same website. The benefit in doing it this way is that people searching for Primecoin will be exposed to Peercoin and the opposite will be true as well. This can be the linked forum as well, since it's already a shared community.
I don't know how it can be separated in the website design. That's something for the designers to figure out, but I believe doing it this way might help further along the awareness, understanding and adoption of Peercoin by exposing more people to it. What do you think?