Smart phones and other mobile devices are the latest creations in web communications and they are being used by more and more consumers, so make sure they have a flawless experience when they visit your site.  In a recent national study, 58% of mobile device users said that they expect sites to download as quickly as they would on their home computers.  And 61% said poor performance would make them less likely to ever visit the website again.  Optimization for mobile devices will help keep your site from lagging behind.