When you get a site that starts to do good traffic, little differences can go a long way. With the increase in mobile handsets that enable internet browsing, and also video game consoles like the psp, you need to make sure your site is compatible for mobile browsers. Such one popular browser is Opera Mini. Even if you can`t visit your sites on your own phone, you can use Opera`s Mini Simulator to see how your site would look on a mobile device. If you have problems, fix them!