Hi folks,
I did this over the weekend, but thought others might be interested:
http://www.mooreds.com/wordpress/archives/2215
"I added the ability to generate a sitemap for all the listings in the marketplace.
First off, install the gem–I used sitemap_generator as it seemed to do what I needed–allow me to call out certain routes and add them to my sitemap. Then you need to create a configuration file, at config/sitemap.rb."
Also am in talks with the sharetribe folks about adding this as a feature to the core platform, you can follow along here: https://github.com/sharetribe/sharetribe/issues/2204
Cheers,
Dan