Here's what I'm trying to do, taken from Kathy Sierra's Creating Passionate Users blog at this link:
When the user walked up to the system, they had to answer just a single question--
What's most important to you in a car?
Based on that one answer, we changed only the headline/title of the screens that followed.
What I've done is set up a "title screen" blog, using the Gallery theme. And depending on which link a person clicks on, it'll bring them to a slightly different homepage, where the title banner and a few other elements are changed.
The thing is, I'm not sure how to do that. >.> Conditional Tags will let me make different pages look different, but I'd have to create a new page every time, and I worry that that might destroy SEO. On the other hand, if I coded some kind of PHP if/then statement (which I don't fully know how to do yet), then I'd have to modify the main site's .php code every time I added a new "theme."
What should I do? Any ideas?