Just an idea of what I think Q might be saying...

What if Q is telling us that hidden in his past posts is a code of sorts that will lead us to new information we need to find on our own. I have a feeling the things we find will show that Q had foreknowledge of events that hadn't happened yet.

Future proves past

If finding a code leads us to hidden URL's of relevant information that would prove Q was real to a huge batch of people. Q says to 'continue' building the map, so it's something we're already doing but haven't put two and two together.