If you are a web developer who writes code on the go, avoid frustration by installing a second website for testing your websites. Why this is important comes from the fact that web browsers , inorder to save data and to improve user experience, tend to show you a cached copy of the website. Therefore if you had made changes to a website you might not see them.
The cache is very important on mobile devices since we need to access some sights with ease, therefore clearing the cache can cost us dearly. To avoid such situations were you have to make some sacrifices , simply install a second browser.
There are also cases were we keep logged on with our accounts but need to access some sites without giving out our identity. Again a second browser will come to your rescue.