I added a slot in the community color add link program for a Mobi URL. A mobi site is version of a web page optimized for mobile phones. Mobile phones have really small screens ... usually about 300 pixels in width.
Mobi sites tend to show summarized information from the main site. Each community directory has a Mobi version with the subdomain m.. For example the Mobi version of ProvoUtah.US is m.ProvoUtah.US.
Anyway, after you define the primary URL for your site, you can add a Mobi URL. The field for the Mobi URL is the second to last line on the form. You have to be logged in to add a link.
NOTE: If your site is already listed in the web directory, just add the link to your mobi site as if it was the primary URL.
PS: I appreciate the few people who pay the listing fee as it is costly to maintain a directory. If you paid the listing fee for your primary site, just add the link and ignore the plea for payment on the last page.