It is amazing to think that over 60% to 65% of all the internet searches are currently being done from mobile devices. This would include smartphones, iPads and tablets.
Mobile Lead Flow Review - https://www.youtube.com/watch?v=wlDLYPXiq28
This is where the people are, as it is more convenient and you can be online wherever you go. If you are going to catch people, catch them while they're out shopping, eating in restaurants and generally in a shopping mood.
If people are out they are looking things up, and if you have a business, they will look in the area where they are located and find you, if you are optimized for mobile marketing.
When you set up your website, just make sure that it is set for mobile devices to pick it up. Most programmers will build a website, and will insert the code to make it available in both places. See more tips here: http://blog.hubspot.com/marketing/mobile-marketing-tips
That is really the key for internet marketing, to make your online information available for your keywords. With all of the tools that are available, you need to use them all, because every different site has a different audience. Facebook has theirs, Twitter has their market and so forth. You want to get to all of them.