You can simply ask for permission to include in the theme, grab the extended license and follow the integration instruction they provided.
Very good news! Congrats!
That would be nice I guess. Getting some shares for every author and staff should be a great idea then.
Looks nice. I like it.
I think it means that the themes are initially using proper structures, tags, scripts that could benefit the SEO ranking (like simply using “h1” tag for primary heading of the page). In other words, they are “SEO ready” themes.
But those are only some factors for SEO. You still need to put your contents, use proper keywords, gain some backlinks, etc. to earn higher ranking on search engines. That is why, generally, most “SEO optimized” themes are not showing up on search engines because the theme is not the “real” site, no actual keywords. All contents are dummy.
Just my 2 cents.
As @chrisakelley said. There should be an XML file for the sample pages included in the theme package. Then you can use “Tools > Import” menu on the admin panel to import that file.
If it is not there, try to contact the author.