explorador - 5:08 pm on Jul 16, 2013 (gmt 0)
Good internal search engine
If you care about traffic (specially mobile) then provide a visible and useful search tool. Many will reach your site via Search Engine results, if what they see it's not exactly what they want then they will hit BACK to try some other search, but if you provide the right navigation they will surely try YOUR internal search.
Think twice about it, some users got to your site because it has related stuff and will not instantly go back to the search engine, they will tweak or change the search but this time INSIDE your site.
Also, imagine some visitor likes something from your site, trying to share show it to a friend they will easily enter your domain name and use your search instead of browsing the site on their phone, that unless they bookmarked the right page.
Provide a contact form that's friendly and visible on mobile devices.