With more and more people using mobile devices to search the web, it is important that your website be mobile friendly. Almost all mobile devices scale down a website so that the entire front page of the site will fit on the mobile browser. Take a look at the 2 examples below.
On the left is the standard website on a mobile device, which is hard to read without zooming in. On the right is the mobile version of the website, which makes it easy to read and gives you the most important information for the site.

Here is another example. On the left again the standard site which is hard to see and read. On the right the mobile site which gives the user the most important information.

Users on mobile devices want to find the information as quickly and easily as possible. Creating a mobile version of your website is very important!
First in Search will develope your mobile site and setup your current website so that it will automatically detect that it is being viewed by a mobile device and send the user to the mobile version of the website without any interaction from the user.