When you browse the web with mobile Safari, you’ll come across sites that ask you to create a login, and that usually requires a password.
You can save your passwords in mobile Safari automatically, but there are some sites that request passwords not be saved. There’s a workaround, though, if you feel like you should be able to save whatever passwords you darn well please, and it’s buried in the Settings app.
Safari does a great job at making your time on the web easy and simple. It will fill in frequently occurring form information, like your name, address, and email address, so that you don’t have to for every site you visit with a form requesting this information. Fill it out once, then let Safari auto-fill the info the rest of the time. It will also save website user names and passwords. Which, when you think about it, is a great idea for your own personal computer at home, but not so great for a work or shared computer.